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Bulletin for ADAS v2.6

1. Graphical Output Select Device Graph Title Xe demonstration Post Script Post Script HP PCL HP GL Explicit Scalin rq Exp g nin HRK W Enable Hard Copy _ Replace File Name graph ps W Text Output _ Replace Default File Name File Name paper txt Return to Input File Select ion cancel Done 1 As in the previous window the full pathway to the file being analysed is shown for information Also the Browse comments button is available 2 Graphical display is activated by the Graphical Output button This will cause a graph to be displayed following completion of this window When graphical display is active an arbitrary title may be entered 13 which appears on the top line of the displayed graph By default graph scaling is adjusted to match the required outputs Press the Explicit Scaling button to allow explicit minima and maxima for the graph axes to be inserted Activating this button makes the minimum and maximum boxes editable 3 Hard copy is activated by the Enable Hard Copy button The File name box then becomes editable If the output graphic file already exits and the Replace button has not been activated a pop up window issues a warning A choice of output graph plotting devices is given in the Device list window Clicking on the required device selects it It appears in the selection window abov
2. acoso 9 4 4 1 0 q is the momentum transfer at scattering angle q and q is the initial momentum Other notation is d cos 9 4 3 R E E f k conventional The radial integrals are evaluated from numerical wave functions as follows Effective potential non hydrogenic radial integrals Let Z be the nuclear charge of ions A and write z Z 1 A parameterized effective central potential is adopted here as the basis for calculating these wave functions The central potential is established by defining an effective screening configuration nlinl njj such that g q 4 Z z 9 4 5 The electron in shell i is supposed to be screened from the nucleus by the electrons in shells lt i and partially screened by the other electrons in shell i itself So the effective charge for the ith shell electron is i l z 7 4 4r 9 4 6 j l The adopted Slater type potential is then V r DV Lexp azr n Var 9 4 7 is mam k 0 The are adjustable parameters chosen so that the one electron wave function satisfies the one electron Schrodinger equation with potential V r and the observed eigenenergy and quantum defect u In practice we set ao with at specified so that only the overall scaling parameter is varied to match the observed quantum defect The radial integrals are evaluated by numerical quadratures Program steps Interactive parameter comments The archive selection window
3. adf07 szd02 li szd02 1i_112 dat adf07 szd02 li szd0O2 li_lil dat adf07 szd02 li szd02 li_1i0 dat adf08 rrc98 h rrc98 h_1i2 dat adf08 rrc98 rrc98 _113 dat adf08 rrc98 he rrc98 he_lil dat adf10 acd96 pj acd96_h11 dat adf10 acd96 pj acd96_hel1 dat adf10 acd96 pj acd96_he12 dat adf10 acd96 pj acd96_li1 1 dat adf10 acd96 pj acd96_li21 dat adf10 met96 pj met96_h dat adf10 met96 pj met96_he dat adf10 met96 pj met96_li dat adf10 plt96 pj plt96_h dat adf10 plt96 pj plt96_he dat adf10 plt96 pj plt96_li dat adf10 prb96 pj prb96_h10 dat adf10 prb96 pj prb96_he10 dat adf10 prb96 pj prb96_1i10 dat adf10 prb96 pj prb96_1i20 dat adf10 qcd96 pj qcd96_he12 dat adf10 qcd96 pj qcd96_he21 dat adf10 scd96 pj scd96_h11 dat adf10 scd96 pj scd96_hel1 dat adf10 scd96 pj scd96_he12 dat adf10 scd96 pj scd96_lil 1 dat adf10 scd96 pj scd96_li21 dat adf10 xcd96 pj xcd96_li12 dat adf10 xcd96 pj xcd96_li21 dat adf1 1 acd96 acd96 li dat adf1 1 acd96r acd96r li dat adfl 1 scd96 scd96_li dat adfl 1 scd96r scd96r_li dat adf1 1 prb96 prb96_li dat adf1 1 prb96r prb96r_li dat adf11 plt96 plt96 li dat adf1 1 plt96r plt96r_li dat adf1 1 qcd96r qcd96r li dat adf11 xcd96r xcd96r_li dat adfl 1 acd89 acd89 li dat adfl 1 scd89 scd89_li dat adfl 1 ccd89 ccd89_li dat adf11 prb89 prb89 li dat adfl 1 plt89 plt89 li dat adf1 1 prc89 prc89_li dat adf1 1 pls89 pls89_li dat adf13 sxb96 li sxb9 6 1i_pjr li0 dat adf13 sxb96 li sxb96 1i_pjr lil dat ad
4. Ag IAN AQ HEFL Ay Ag IAN pip 1 0 N pig 1 Also suppose that the j k spectrum line has a normalised emission profile j l A In general pix pix such a profile is a convolution of Doppler and instrumental functions Then the envelope feature photon emissivity coefficient vector is defined as hu F PELON DS PECL P A dA 9 10 4 ki eti 1 jo is the natural wavelength of the J k spectrum line The default broadening assumed is Doppler with a Maxwellian distribution for the emitting ion at temperature T ion equal to the electron temperature T used in the collisional radiative modelling of the APE s This consitutes a minimum broadening The integral in equation 9 10 4 is then expressible in terms of error functions as F PECL Y PEELE Sf erfc Aa 0 1 eao 9 10 5 erfe Zu 0 1 2 e klin Mp m ton where O hij and M is the emitting ion mass I H My m p In actual spectral analysis involving complex heavy species individual strong spectrum lines may be distinguishable from the envelope It is therefore appropriate to archive a restricted number of the strongest individual FEE s and these can be identified and ordered as processing for the F FEC s takes place Again while passing through the complete set of radiative transitions for assignment to excitation F PEC s the line radiative power coefficient for the ion pie can be totalled This total line pow
5. 820E403 1 1 000E 12 1 000E 12 2 1 0008 04 1 000E 04 1 000E 04 7 320E403 2 1 000E 13 1 0008 13 3 2 000E 04 2 000E 04 2 000E 04 9 220E 03 3 1 000E 14 1 000E 14 4 3 000E 04 3 000E 04 3 000E 04 1 160E 04 4 1 000E 15 1 0008 15 5 5 000 04 5 000E 04 5 000E 04 1 460E 04 5 1 000E 16 1 000E 16 4 mf D Li JK A Temperature units Kelvin Density Units cm 3 Bla Edit Table Edit Table Default Standard Set 4 Default Standard Set 4 Metastable State Include Reactions Spectral Interval F Ionisation Rates min wave max wave 1 256 10 00 90 00 Charge Exchange 2 512 100 00 200 00 3 512 3200 00 6500 00 Recombination ki Imer Shell Tonisation c 1 Include Projection Data Edit Table Proton Impact Collisions Lower limit of A value 9 00000 For a single metastable normalise PLT and PEC zeff 4 00000 NO 6 Wavelength ranges and associated pixels are specified in an editable table The set of control parameters for the calculation follows ADAS208 8 The Normalisation option should be chosen when there is only a single metastable z The output options window is as shown below 1 The Text Output button activates writing to a text output file The file name may be entered in the editable File name box when Text Output is on A pop up window issues a warning if the file already exists and the Replace button has not been activated 2
6. The PEC adfl5 file comprises the set of individual line emissivity coefficients 42 MPA F Text Output Append Replace File Name paper tat F PEC adf15 file Append Replace File Name fadas810 adfI5 pass F Feature PEC adf40 file Append Replace File Name fadas810 adf40 pass F Total power adfll plt mfiltered Append Replace File Name fadas810 adflL _plt pass F Total power adfll plt filtered _ Append Replace File Name iadas810 adfll plt filter pass Choose output options 3 The Feature PEC adf40 file comprises the envelope feature data for each selected wavelength interval and each metastable tabulated in pixel space as a function of temperature and density A The Total power adfi I plt unfiltered file comprises the total radiated power in the spectral intervals 5 The Total power adfl I plt filtered file comprises the radiated power in the spectral intervals as transmitted by the filter specified in the input filter file if selected Notes 43
7. and active for convenience so that a sequence of adjustments may be made Click Done to close the widget Surface Plot Adjust widget _ Graph Range Scaling ca eh maa HARAK zmn i PRAK min AX Graph Stvle 45 45 gh il Fil lil X rotation rotation ADAS804 Calculate cross sections amp rate coefficients The code calculates electron impact excitation cross sections in a one electron distorted wave Born approximation using an optimised Slater type or Jucys screening potential and observed level energies Background theory For a free electron colliding with a Z times ionised ion A in the state yY A y e E A y e E 9 4 1 E and E are the initial and final electron energies with E gt E and AE E E is the transition energy The Born collision strength takes the form JEE E A p A 0 EE B EB 9 4 2 where the sum is over the various multipoles On comprises the angular factors and R CE E the momentum and radial integrals The Ochkur extension allows the application tto spin change transitions but with different OF and R V E E In term coupling the formulae are No spin change y S L niSL y S L n l SL D 21 1 21 1 21 1 24 1 ILL tt 2 MAL L l al loo 0 p 2 nl j qr n l 4 4 of Spin change y S L niSL y S L n l S L 21 D 21 D 21 D 22 1 OS Se LE TRI AT 2 28 D L f ajlo 0 0 2 I Knllj qrin T ti PO fl aa
8. appears first It is slightly different in operation than the usual file selection window 1 The recommended root path for user archiving for ADAS804 analysis is uid adas arch804 which may be edited in the usual manner Click the appropriate button for opening an old archive file starting a new archive file or ignoring archiving In the first case the usual file display window shows existing archive files from which selection may be made The selected file is displayed in the selection window In the second case the file display window is the same but the selection window is editable for entry of a new archive file name Remember to press the return key on the keyboard to record an entered value The capability is given for reworking or re displaying the results of an earlier analysis stored in an archive file Click on the Refresh from archive button Then give the Archive index number The selected data will be used as the default data in the subsequent processing and output windows Archiving is strictly sequential A new analysis is simply appended at the end of the archive file and the index updated These is no data replacement or substitution Clicking on the Browse Index button displays the index list for the selected archive file The possibility of browsing the index appears in the subsequent main window also Clicking the Done button moves you forward to the next window Clicking the Cancel button takes you back to the pre
9. important configurations are preferably restricted by setting the lowest n shell from which the promotion can occur and the highest n shell to which the promotion can take place Again it is single electron promotion which is done Finally it is a usual policy in accurate energy level calculations to include all the configurations of a complex if one of the configurations of the complex is present Such a policy can generate large numbers of configurations in the complex ion case It is helpful to decide if whole complexes associated with the single electron promotion configurations are to be included 2 A similar procedure may be applied in the two valence shellcase but with the permissions for each electron specified separately Configuration partitioning For complex ions the number of configurations which satisfy even quite restricted promotional rules can be large Also since these configurations often include more than one unfilled shell the level count for each configuration can be very large Mechanisms beyond the basic promotional rules are required to restrict the total level set to match available computer power In ADAS808 a second mechanism is introduced based on observational spectral regions of interest The principle is straightforward Consider a spectral region of interest Ao i which may be the range of a particular spectrometer or an interval of special diagnostic value For configurations 23 and J introduce t
10. the file display window size Click on a name to select it The selected name appears in the smaller selection window above the file display window Then its sub directories in turn are displayed in the file display window Ultimately the individual datafiles are presented for selection Datafiles all have the termination dat Once the adf04 files are selected the set of buttons at the bottom of the main window become active Clicking on the Browse Comments button displays the comment line information stored with the adf04 datafile It is important to use this facility to find out what is broadly available in the dataset The possibility of browsing the comments appears in the subsequent main window also 32 ADAS 809 INPUT Input ADFO4 type 1 file Data Root lv disk3 summers adas ad 04 Central Data User Data Edit Path Name hel ike helike_hpsO2he_t1_cropped dat helike hpsO2he ti dat helike hpsO02he ti cropped dat helike hpslO2he dat helike kvih97he dat Browse Comments Select ADF04 type 3 file for comparison Data Root f disk3 BROXS adas at Central Data User Datal _ Edit Path Name hel ike helike_hps102he dat helike_hps02he_t1 dat Data File helike_hps02he_t1_cropped dat helike_hps102he dat helike kvih97he dat helike kvil97he dat Browse Comments The processing options
11. to produce ordinary dipole transitions between C 13 C 14 doubly excited states The program relied on parsing AUTOSTRUCTURE output Unfortunately the output formatting changed significantly between v16 5 and 16 10 9 the current ADAS version We have to apologise about a failure in our own group s internal communication system A new read_adf00 pro routine has been prepared to retrieve data from the adf00 reference atomic data files that is ionisation potentials and ground configurations of the ionis of all elements We have made many changes to ADAS801 as we tested it to destruction at the Winter School These are all to do with learning tocope with very heavy species The main changes are Algorithm deficiency in rcg which did not properly allocate unlabeled levels among the multiply labeled ones This shows up in particular in highly mixed ions Purity of levels is now written to IC adf04 file Indication in comment section whether a level or a term within a level has been re labeled in rcg sprnadd for Jonisation potentials can now be retrieved from the central ADAS adf00 collection Typing in the correct value is still possible Type 1 adf04 files can now be written directly by ADAS801 To accommodate adf04 files with large level and transition lists the output format of the transition indices and Upsilons is now adjusted according to the number of levels This fits in with the new flexible adf04 reading cod
12. transition array spectrum in which the ordinates are reduced dipole matrix elements provides a relatively crude picture Transition arrays between excited configurations are on the same footing as those involving the ground configuration There is no real population information It is to be noted however that the first stage of the Cowan code package also returns the reduced Born matrix elements Thus a configuration average population calculation and emissivitv production is possible without significant additional computational overhead The configuration average transition array emissivity coefficients for an ion provides a more realistic footing On the other hand at this first stage of structure calculation no basis for relative weighting of transition array emission functions from different ionisation stages is available Due to the sensitivity of the spectrum and dominant ionisation stage to electron temperature a constraint based on temperature is unsound at this point of the data generation exercise Equal weighting of ionisation stages abundances is the most appropriate choice ADAS808 presents either a reduced dipole or configuration average emissivity transition array spectrum to the user These details are described in detail below Envelope features An envelope feature photon emissivity coefficient denoted by F FEE is 2 means a lower limit D4 for the transition min on the reduced dipole matrix elements defined on a wave
13. uid adas defaults where uid is your user identifier The defaults directory records the parameters you set the last time you ran each ADAS code Move to the directory in which you wish any ADAS created files to appear These include the output text file produced after executing any ADAS program paper txt is the default and the graphic file if saved e g graph ps if a postscript file Initiate ADAS move to the series 2 menu and click on the first button to activate ADAS201 The file selection window has the appearance shown below 31 Selection of two adf04 files is permitted The first selected in the upper sub window is of adf04 typeI and is mandatory The second optional file selected in the lower sub window is of adf04 type3 It provides a temperature grid for the conversion Selection of the adf04 files follows the standard ADAS Data root shows the full pathway to the appropriate adf04 data subdirectories Click the Central Data button to insert the default central ADAS pathway to the correct data type Click the User Data button to insert the pathway to your own data Note that your data must be held in a similar file structure to central ADAS but with your identifier replacing the first adas to use this facility The Data root can be edited directly Click the Edit Path Name button first to permit editing Available sub directories are shown in the large file display window Scroll bars appear if the number of entries exceed
14. DAS Baseline Atomic Data for complex atoms Drivers for manv or all of the ionisation stages of a heavv element mav be generated at the one time The drivers produced are the input datasets for offline running usuallv on massivelv parallel computers of the codes ADAS801 ADAS407 and ADAS810 Subsequent to ADAS808 the offline calculations mav be executed automaticaalv under the control of a master script with final deliverv of complete data in the ADAS data format classes ADF04 ADFO3 ADF11 ADF15 and ADF40 The code allows the user to assess and regulate the subsequent size of the offline calculations on the basis of experimental spectral regions of interest available machine size and strategies in atomic structure modelling Background theory The fundamental part of the ADAS Baseline Atomic Data consists of ADFOA files for each ion of an element archived in iso nuclear collections Each file comprises energy levels and A values for an ion computed using Cowan Atomic Structure Code and electron impact Maxwell averaged collision strengths in the Born approximations Implementation within ADAS is via the code ADAS801 This code has the Cowan Atomic Structure Code at its core but includes an IDL front end to acquire the input data the ADF34 driver and subroutines to organize output in ADAS standard forms ADFO4 files and nomenclatures For medium heavy element ions with many electrons the ADAS801 calculations must be performed in intermediate c
15. DFI5 files The Input temperatures are usuallv the ADF standard reduced temperatures Note that the temperature set is editable and a user s units of choice mav be selected A pathwav to ionisation potentials for all elements and their ions is required These data include the ground configurations and are provided in the Central ADAS archive packages adas adas adf00 ADAS 808 INPUT Nuclear charget Element Minimum ion charget Maximum ion charge ji Yu ugs adas adf00 gt B ADF04 Temperatures ADF15 Temperatures INDEX Electron Input INDEX Electron JINDEX Electron Input 1 2 000E 02 1 2 000E 02 1 2 000E 02 2 5 000 02 2 5 000E 02 2 5 000E 02 3 1 000E 03 3 1 000E 03 3 1 000E 03 4 2 000E 03 4 2 000E 03 4 2 000E 03 5 5 000E 03 5 5 000E 03 5 5 000E 03 6 1 000E 04 6 1 000E 04 6 1 000E 04 EI pe EI 13 Temperature Units Reduced Temperature Units Reduced Edit Table Edit Table Edit Table Default Temperatures Default Temperatures Default Temperatures Edit the processing options data and press Done to proceed Temperature Units Reduced Browse Comments Cancel Done 4 The Browse Comments button has no effect at this time Clicking the Done button moves you forward to the next window Clicking the Cancel button takes you back to the previous window The processing con
16. FE Eau te a kul er Lin Haber ef teala for im mir Lig kal the HF ESS TE Hater of lwalu for mhed cofiqurution id Tie eie A thw lif f ji ji Edit the pro usrinj options data amd press Dore t proceed Ji a 2 Clicking the Calculate Survey Spectrum button spawns the calculation of the first stage of the Cowan code to obtain the necessary parameters The calculation may take a few minutes but then all information is available the stick plot is displayed Any further selections operate rapidly 3 The stick plot shows the transition arrays for every ion in the group Transition arrays for the ion selected at the right are marked with sticks in a contrasting colour 4 The wavelength range of the stick plot may be altered and logarithmic or linear axes chosen 5 The plot area is active The mouse may be used to delimit rectangular areas which are the spectral intervals of special interest The base of the rectangle set a minimum value of the reduced dipole matrix element for transition array configurations to be included in the resolved set 6 To mark a rectangle first activate a square row button on the left of a row of the spectral ranges sub window so that it is displayed and the button on the right to make the row active for editing Drag out a horizontal line on the plot area using the right mouse button and release The rectangle may be stretched by catching an edge and dragging with the left mouse button The select
17. Feb18 03 ADAS Bulletin I must firstly apologise for the delay in this release As you will recall we held the intensive four week Winter School on ADAS and Atomic Calculations at Strathclyde University from 18 Nov 13 Dec This had the two effects of giving us a large number of corrections to implement in ADAS codes and running me into my heavy examining amd marking schedule The Winter School was nonetheless very beneficial since it was the most concentrated examination of the ADAS package we have ever had I had hoped to go with a comprehensive release of all the heavy species handling codes together some little time ago However these codes are pretty complicated and are taking a long time to verify adjust and get working compatibly Handling heavy species means revising upwards virtually all decisions made many years ago maximum angular momenta fields allocated to statistical weights lengths of configuration strings translation tables etc etc But we are nearly there now and I feel it is best to release some of them now as beta versions so that we get them under more general test Also we have already introduced some of the codes to participants at the Winter School who wish to continue working with them immediately So this time we have included ADASS10 for interrogating and displaying envelope feature emissivity coefficients ADAS808 for previewing complex species spectral emission in selected spectral intervals and sett
18. Ne are available These buttons insert the electron temperature data or electron density data respectively from the input data set as the output values and offers a choice of a fixed electron density or electron temperature respectively to be associated with these 5 The third button is for Value Selection by display Click to pop up the point value selection widget It is designed both to provide a display of the actual three dimensional surface of the density and temperature dependent wavelength interval summed envelope feature collisional radiative emissivity coefficient see equation 6 10 6 and to allow selection of temperature density pairs for the output graphs visually The point value selection widget has the appearance shown below Graph Stvle 30 x rotation Z rotation Surface Styles Mesh cl B W X axis style Log Y axis style Log Pair value selector Erase 1012 tol il an 1 100 1000 10000 Add at end jAdd at beginning jInsert point Te _ Delete point Ne 3 5585531er cm 3 1 The summed envelope feature emissivity coefficient surface is shown Controls are provided to orientate and alter the appearance of the display Sliders allow rotation about the X axis and about the Y axis so that the whole surface can be examined The surface styles can be altered by selecting from drop down menus The styles include continuous or mesh surface
19. UT OPTIONS Data File Name disk3 summers adas adf04 hel ike hel ike_hpsO2he_t1_cropped dat Browse Comments Graphical Output Graph Title Post Script _ Explicit Scaling HP PCL Remax lt HP GL erir e e Yomax Enable Hard Copy _ Replace File Name adas809_graph pg Select Device File Name Text Output _ Replace Default File Name paper txt W adf04 File _ Replace Default File Name File Name i home summers adas pass adas809 adf04 pa N B Only when you exit ADAS809 will adf04 output be sent to this file Cancel Done Graphical display is activated by the Graphical Output button This will cause a graph to be displayed following completion of this window When graphical display is active an arbitrary title may be entered which appears on the top line of the displayed graph By default graph scaling is adjusted to match the required outputs Press the Explicit Scaling button to allow explicit minima and maxima for the graph axes to be inserted Activating this button makes the minimum and maximum boxes editable Hard copy is activated by the Enable Hard Copy button The File name box then becomes editable If the output graphic file already exits and the Replace button has not been activated a pop up window issues a warning A choice of output graph plotting devices is given
20. VEL UPPER LEVEL INDEX DESIGNATION INDEX DESIGNATION Polvnomial Fitting 1 1s2 1js 0 0 2 1s2s 3 s 1 0 1 1s2 1 s 0 0 2 1s2s 3 s 1 0 1 1s2 1 s 0 0 3 1s2s 1 s 0 0 1 1s2 1 s 0 0 4 1s2p 3 P 4 0 1 1s2 1 s 0 0 5 1s2p 1 P 1 0 1 1s2 1 s C 0 0 6 1s3s 3 s 1 0 Select Temperatures for output file W Output Electron Temperatures INDEX Output Input 1 5 820E 03 5 820E 03 2 7 320E 03 7 320 03 3 9 220E 03 9 220E 03 4 1 160E 04 1 160E 04 EJ ja Temperature Units Kelvin Edit Table Default Temperature Values 4 To obtain an output adf04 type3 file output temperatures must be selected If a comparative adf04 type3 file was selected the Input temperatures are taken from that file Otherwise temperatures from the Defaults file are used Pressing the Default Temperature values button inserts a default set of temperatures equal to the input temperatures 5 The Temperature Values are editable Click on the Edit Table button if you wish to change the values A drop down window the ADAS Table Editor window It follows the same pattern of operation as described in bulletin The output options window is as shown below 1 As in the previous window the full pathway to the file being analysed is shown for information Also the Browse comments button is available 34 ADAS809 OUTP
21. al FEEC s is determined from the whole ground excitation driven set and the selected set is then used for all other metastable drivers and for recombination The rank ordering of individual FEE s is from the maximum of each FEE viewed as a tabular function of T and N Note finally that F FEE s are tabulated as a function of selected wavelength range wavelength interval bin T and N with T T Program steps It is noted again that the code is designed to allow single ion testing of FEC production The primary intent is nonetheless mass production and so the interactive code ADAS810 makes use of the driver data sets and file naming conventions of the mass production codes Thus as ADAS810 is in essence a variant of the population code ADAS208 as well as direct selection of an ADFOA file the data set selected on the INPUT screen may be a driver data The driver files for this application are of format ADF42 The relevant pathway is adas adf42 iso_nucl lt element gt The primary parameter settings for operation of ADAS810 are contained in the driver which must be copied to the equivalent user area and edited directly to modify operation The driver structure is shown in the illustration below Note the various file pathways lines 2 4 which include the input ADFOA file and then the output PLT FEE and F FEE files In interactive operation ADAS810 allows re specification of some parameters such as wavelength intervals tempera
22. be calculated The table is editable and there are default buttons for both the energies and temperatures The default values are the standard ADAS sets At the present time only the effective potential Born calculation is provided The option for an impact parameter calculation of dipole allowed transitions only will be provided in the future A choice of Slater and Jucys forms for the effective potential is provided The current trend of our work is to prefer the Slate form At this time only internal calculation of wavefunctions is permitted The option of reading in numerical radial wavefunctions may nbe made available at a later stage Adjustable alpha parameters in the potential may be varied so that the wavefunction eigenenergy corresponds to the input energy There is another option whereby the potential parameters are locked and the 18 eigenenergv sought This is a less useful option in the present context 8 The potential form is established bv specification of a screening configuration Typically this is the distribution of the electrons amongst their various nl shells in the initial state excluding the active electron that is the parent ion Also initial values of the adjustable parameters may be set Usually both are set to 1 0 initially L 1 pe o aat m ee te Fils Bees Mio mere mener BBA bet eter bere del kremi insiders be pis air re paies Mi slater F t u mya P 7 ularmi fa
23. d not include transitions that were present in the 93 set This is an old problem arising from the rather crude algorithm in ADAS208 for restricting the total number of pecs A new set of unresolved and resolved files keyed to the visible spectrometer range vsu and vsr files just as for CII and CIII have been added for CI as follow adf15 pec96 c pec96 c_vsu c0 dat adf15 pec96 c pec06 c_vsr c0O dat adf13 sxb96 c sxb96 c_vsu c0 dat adf13 sxb96 c sxb96 c_vsr c0 dat New adf38 and adf39 photo excitation and photo ionisation data These have been prepared by Nigel Badnell and Mike Seaton H like hHe like and Li like ion s of carbon oxygen sulphur and iron ions have been included on this occasion Note that there are both LS and IC versions Further data sets are in preparation adf38 nrb02 h lt ion gt ls lt n gt l r dat adf38 nrb02 he lt ion gt Is lt n gt 1 r dat adf38 nrb02 li lt ion gt ls lt n gt l r dat H P Summers 07 Feb 2003 ADAS510 F PEC graph envelope feature photon emissivity coefficients The program interrogates enevelope feature photon emissivity F FEE files of type ADF40 The coefficient is extracted for a selected wavelength range of an ion The coefficient may be displayed in a three dimensional plot Background theory An envelope feature photon emissivity coefficient denoted by F AEE is defined on a wavelength interval and is a composite feature arising from very many lines from a single ionisatio
24. driver file maintains compatibilitv of operation of the interactive ADAS810 with the automatic offline mass production codes Data from the driver fills the editable fields in on the following Processing window Otherwise thev mauts be edited in Note that each type of data is stored according to its ADAS data format adf number adf42 is the appropriate format for use by the program ADAS810 Your personal data of this type should be held in a similar file structure to central ADAS but with your identifier replacing the first adas Available sub directories are shown in the large file display window Scroll bars appear if the number of entries exceed the file display window size Click on a name to select it The selected name appears in the smaller selection window above the file display window Then the individual datafiles are presented for selection Datafiles all have the termination dat Once a data file is selected the set of buttons at the bottom of the main window become active Clicking on the Browse Comments button displays any information stored with the selected datafile It is important to use this facility to find out what has gone into the dataset and the attribution of the dataset The possibility of browsing the comments appears in the subsequent main window also Clicking the Done button moves you forward to the next window Clicking the Cancel button takes you back to the previous window An extra button Expansion and filter
25. e and densitv values at which the envelope feature emissivitv coefficient is stored in the datafile inputs is also shown for information Note that vou must give temperature densitv pairs ie the same number of each as for a model The underlving datafile has a three dimensional storage as a function of temperature density and wavelength ADASS10 PROCESSING OPTIONS Title for Run l 1 eg Data File Name home martin adas adf40 xe_10_adf40 dat Browse Comments Select data Block INDEX Wavelength Ion Processing Metastable Range Source Code Index Le 45 1 2170 0 f_excit t 1 8 2 39 9 f_excit t 2 45 1 2170 0 f_excit t Temperature amp Density Values Temperature Density INDEX Output Input Output Input 2 090E 00 2 090E 00 1 000E 13 1 000E 11 5 210E 00 5 210E 00 1 000E 13 1 000E 12 1 040E 01 1 040E 01 1 000E 13 1 000E 13 2 090E 01 2 090E 01 1 000E 13 1 000E 14 mon Fl Temperature Units eV Density Units Edit Table Default Te Default Ne Value Selection by display Edit the processing options data and press Done to proceed E Cancel Done 4 The program initially recovers the output temperature density pairs you used when last executing the program The Temperature amp Density Values are editable Click on the Edit Table button if you wish to change the values The usual drop down window the ADAS Table Editor window appears Default Te and Default
26. e Atomic Data are achieved by launching an integrated PERL script to the target high performance parallel computer system No further user intervention is required Configuration definition The set of working configuration for the atomic structure calculation is obtained by an electron promotional strategy starting from the ground configuration T nl n l n l where q 9 0 for i 1 m and Vai N El For complex systems there may be empty inner shells and multiple open shells Elements up to uranium are within the scope of ADAS808 The ground configurations for every ion of every element up to uranium are provided in the ADAS data format for general constants ADFOO as adas adas adf00 ground_configs lt element symbol gt dat An equivalent data set provides both the ground configurations and the ionisation potentials as adas adas adf00 ground_ionpots lt element symbol gt dat It is helpful to maintain a consistent pattern for configurations In ADAS two conventions are use namely the Standard form and Eissner form Standard form represents each shell with three characters with a space separating shells in the whole configuration as 1s2 2s2 2p1 representing Is 2s 2p For certain calculations principal quantum numbers greater than 9 may be required and for complex element ion shell occupancies greater than 9 also may occur To maintain the three character shell notation the integers beyond nine are represented alphabeticall
27. e table is editable to add further configurations which are not entered by the promotional strategy A PROG v Lee Toe Def rien Spleen Gece kil kala Ai fein ail barje Ali a Promote fraa imer halla Yen om Lasit iatis iili li ti eat F irei kaz ote li m imrmima far elected arbi al E ii pom tog 10 Edit the pro ussizz options data ami press Dore t procead The total level count for the ion is shown It is now possible to select configurations to be treated as resolved by activating the right most buttons The number of levels in the resolved set of configurations is displayed in the lower box There are two sets of Select All and Deselect All buttons which apply to the right most button selectors The upper pair apply to the lists for every ion in the whole ion range simultaneously The lower pair apply only to the currently displayed ion Additional strategies for inner shell promotion are in development and are subject to change In the present beta version this button is omitted The processing configuration selection window is shown below 1 Clicking the Configuration Selection button presents the window shown below in which the sub window on the left is now used to show a a stick spectrum of the various transition arrays 26 BM PROG Biex kil balar FLI anj kesa le i a Elo ia Jr run ja them fn a ie ee See sa im F hoem jm F 1 fs CRI fr
28. e the Device list window 4 The Text Output button activates writing to a text output file The file name may be entered in the editable File name box when Text Output is on The default file name paper txt may be set by pressing the button Default file name A pop up window issues a warning if the file already exists and the Replace button has not been activated The graphical output window has the appearance shown below 1 The 3 D plot is displayed together with identifying textual annotation 2 The Print button sends the displayed graph to the graphic file The Adjust button pops up the 3 D graph adjustment widget which allows modification of the graph INDEX TEMPERATURE 1 OSJa4HIO l Print Done The 3 D graph adjustment widget has the appearance shown below 14 Control is provided to alter the axes A choice for the X axis temperature or density is provided Note that the X axis is representing the variation with both temperature and density since model pairs are being used The Y axis is assigned to wavelength The style logarithmic or linear for each of the axes may be varied Explicit scaling may be activated and then the usual manual entry of minima and maxima for each of the three axis scales is supported Control of the orientation of the 3 D display is provided Also the appearance of the surface mesh or surface and colour of the surface may be chosen Note that the widget remains present
29. electrons from the ground configurations of the ions The criteria for promotion are shell based and not set up ion bv ion rather they are for the group of ions of the element For complex ions it is possible to have ground configurations with more than one partially filled shell which are called valence shells By reviewing the ground configurations of the ion group a list of single valence shells present is identified likewise for double valence shells and in principal on to triple valence shells The promotional strategy depends on whether there is a single or double valence shell At this time ADAS808 has no strategy for triple and higher valence shells 1 In the single valence shell case we progress through each of the identified valence shell orbitals in turn Consider valence orbital n Distinguish promotions upward in principal quantum number that is to nl shells such that An n n gt 0 from promotions downward in normal shell ordering with An lt Q Principal quantum shell promotions are determined by the permitted maximum lAn and by the sign of the promotion The negative case allows promotions to empty inner shells to be treated In similar manner promotions are ranked according to the maximum JAI allowed with positive and negative A handled separately Note that the valence shells treated in this manner are partially filled Promotions from inner closed shells excluding the valence shell which may generate many less
30. er coefficient archived in the data class ADF11 subcategory ZT which is the part driven by excitation for the ground or metastable levels of the ion is a more precise estimate that than computed by the code ADAS408 and so is a preferred substitute for that data For application to actual measurements of total radiation emission it is normally necessary to calculate Pe as modified bv appropriate soft x rav and or bolometer filter transmission functions Such modification can not be done retrospectivelv on the unfiltered pe In contrast the F PEE is suited to 37 further processing which can include imposition of spectrometer instrument functions as well as filtering and integration over extended wavelength regions Such additional operations on FEE s are treated as separate from ADAS810 and are handled in a new interrogation code for F FEE s ADAS510 complementing ADAS503 Note that preparation of filters is provided by the codes ADAS414 and ADAS415 It is also assumed that this is the route for preparation of higher precision filtered pe s and requires the initial creation of appropriate F AEE s via the present ADAS810 code In like manner F E s can be produced provided the input data ADFOA supports this Note that for ease and consistency in modelling the same spectral intervals apply to both the F PEC sand the PEC s and to each of the metastable drivers if more than one Also the selection of the strong individu
31. es The new complete general purpose adf04 reading subroutine is xxdata_04 for and it resides in the highest level fortran adaslib sub directory paper txt now holds a record of the temporary files used in the calculation Dimension updates have been made in ADAS201 ADAS205 and ADAS207 so as to cope with xenon This meant that xxminv for also had to be re dimensioned 6 15 C 16 C 18 C 19 C 20 C 21 C 22 C 23 C 24 ADAS403 did not work correctly on SUN hardware The IDL spawn command requires the sh parameter in that case The addition has no effect on other operating systems ADAS207 had a problem with the neutral density and recombining fractional abundance ratios the vectors ratha and ratia These can change in size between runs but the size stored in the defaults file was fixed Their values are not stored but the structure assignment in IDL does not allow for re dimensioning of vectors or arrays ADAS402 had a lingering IDL v5 5 array of one bug A more serious problem was a peculiar logic flaw when using the search button the central year was not searched for if a default year was present This has been corrected The IDL version of the xxdtes routinewas machine specific This arose by trying to pass FORTRAN logicals through C to IDL A more robust way is to pass integers but this requires an interfacing FORTRAN program Keeping with convention this is called xxdtes_calc for and
32. f13 sxb96 li sxb96 1i_pju lil dat adf13 sxb96 li sxb96 1i_pju li0 dat adf13 sxb96 li sxb96 1i_pjr li2 dat adf13 sxb96 li sxb96 1i_pju li2 dat adf15 pec96 li pec96 li_pjr li0 dat adf15 pec96 li pec06 li_pjr lil dat adf15 pec96 li pec96 li_pju li1 dat adf15 pec96 li pec96 li_pju li0 dat adf15 pec96 li pec96 li_pjr li2 dat adf15 pec96 li pec96 li_pju li2 dat adf17 cbnm96 li chnm96 li_li01s dat adf17 cbnm96 he cbnm96 he_lills dat adf17 cbnm96 h cbnm96 h_1i21s dat adf18 a09_a04 drm96 he drm96 he_lil dat D 5 D 6 D 7 D 8 D 9 adf18 a09_a04 drm96 1i drm96 1i_li0 dat adf18 a17_p208 exp96 h exp96 h_li21s dat adf18 a17_p208 exp96 h exp96 h_li2n dat adf18 a17_p208 exp96 he exp96 he_li1ls dat adf18 a17_p208 exp96 li exp96 1i_li01s dat adf18 a09_p204 drm96 h drm96 h_li2n dat adf18 a09_p204 drm96 he drm96 he_liln dat adf18 a09_p204 drm96 li drm96 li_li0n dat adf25 bns96 h bns96 h_1i2 dat adf25 bns96 he bns96 he_lil dat adf25 bns96 li bns96 1i_li0 dat Add the adf00 directory which holds configuration and ionisation potential data Note the ga dat file was incorrectly formatted Incorrect ionisation potentials missing exponents in Rb Tc and Pd adf00 Correction to A value in OV IC file Peter Young RAL adf04 adas 8 cop98 8_ic o4 dat The ADAS405 and ADAS406 example scripts atStrathclyde were out of data and so embarassingly did not work David Elder pointed out that the 96 neutral carbon pec and sxb datasets di
33. figuration generator window is shown below 1 The processing window has three separate modes of operation which may be selected In Configuration Generator mode the window appearance is as shown below This mode must be completed before the other modes are meaningful and is described below 2 The sub window on the left permits the setting up of a promotional strategy for configuration generation You must note that this strategy applies to simultaneously to all ions selected on the Input window Single and double valence shell cases are chosen as required and the fields which are presented depends on that selection The one valence shell case is illustrated below 3 The valence shells are listed Clicking on a member of the list causes it to appear in the selection widget Then the choices made on the left at 4 apply to that valence electron 25 Make the preferred choices then click on the Set Default Configurations Button Done is appended to the chosen valence shell in the list widget Work through each shell in the list Note that a shell may be reworked simply by reselecting it In like manner select the Two open shell button and then work through the two valence shell list When the promotional strategy is complete enter an ion charge from the selected range in the text box The set of default configurations for that ion is presented in the table together with the number of levels which would result from that configuration Th
34. file name paper txt may be set by pressing the button Default file name A pop up window issues a warning if the file already exists and the Replace button has not been activated H IEE Lo ADASOU4 QUIEUT OPTIONS oo tt sitter citron biais re DIX Data File Name home summers adas arch804 test adas born dat w Standard Plot option w Burgess Plot option F Graphical output Select Device Post script Graph Title new title for test POSE Post Script HP PCL HP 6L l Omega graph scaling 4 Upsilon graph scaling Xai TT X max ji Xe ji Xmax f Sms ji Ymax i Yi i Ymax f F Enable Hard Copy Replace File Name Xpraph Ps A Text output 4 Repino s paper Ext File Name Jk onefsmmnensi adas archie The output graph windows are shown below 1 The Previous and Next buttons allow switching between the Upsilon and Omega plots Print and Printall send the graphs to the hard copy unit Click Archive to add the complete set of results for the case analyses to the end of the archive selected on input and assign the next sequence number to it 20 Print Printuli Archees Cai fone Notes 21 ADAS808 Create a composite set of adf34 adf40 and adf41 iso nuclear driver files The program uses the IDL graphical user interface to automate preparation of the driver datasets required for large scale off line production of A
35. files is present Click it to pop up a supplementary file selection window shown below These supplementary files may be included if available to extend the population and emissivity calculation paralleling the selections available in ADAS208 39 Standard file adf04 Driver File adf42 Specific Ion File Details Phones summer A RA adf GAZ central Data User Data 4 Edit Path Name ES 2 helike helike_hps102he dat helike_hps02he_t1_cropped dat helike_hps02he_t1 dat helike_hps102he dat specific ion and optional expansion file names i Coments Cancel Donej Expansion and filter files 11 On the upper sub window an expansion file may be selected This is the same expansion file as used by ADAS208 and is drawn from the cross referencing file subclass adf1S al7_p208 12 On the lower sub window a filter file of format adf35 may be selected ADAS810 provides total radiative power and filtered power as well as the line and envelope emisisvities 40 Central Data User pata 4 Edit Path Name PPEREREPERESEEEE SELES ES ESSE SESE ESE Eee ee eee eee eee eee eee eee eee reese eee eee Expansion File Details Phones dass nas a 20 ab 9200s jexp96 he exp96 he_heO1s dat expS6 he_c41s dat exp96fhe n5ls dat exp936 he_ne8ls dat Filter File Details hones a an a an adf 38s User Data 4 Edit Path Name The processing options window has the appearance sho
36. he configuration average energies E w and ET the transition array average energy AE ES El w and wavelength A hc E El pe av ep av E lt E Configurations such that the transition wavelength a ef A A j should be handled at high resolution that is level resolved while configurations such that the transition wavelength A ef may be handled at low resolution that is configuration average In general there may be a set of wavelength intervals of interest and from the total number of configurations Ne is partitioned into the level resolved set numbering N Ce and the configuration average set numbering N c Such that Nc N c N c A further constraint may be imposed by setting a lower limit for transition probabilities thereby excluding very weak lines At the configuration average level this jal arrays A preliminary stage of the Cowan structure code package generates configuration average energies and reduced dipole matrix elements This stage is rapid and makes low demands on computer resources Itis convenient therefore to provide a transition array spectrum display so that the definition of wavelength regions of interest can be done directly in interaction with the display Immediate information is returned to the user on resolved level counts and on resolved and unresolved configuration counts so that the size of the subsequent full structure computations may be assessed and regulated The
37. in the Device list window Clicking on the required device selects it It appears in the selection window above the Device list window The Text Output button activates writing to a text output file The file name may be entered in the editable File name box when Text Output is on The default file name paper txt may be set by pressing the button Default file name A pop up window issues a warning if the file already exists and the Replace button has not been activated The adf04 File button activates writing of the full configured adf04 type 3 dataset to an output file The file name may be entered in the editable File name box The default file name pass adas809 adf04 pass may be set 35 by pressing the button Default file name A pop up window issues a warning if the file already exists and the Replace button has not been activated The graph is displayed in a following Graphical Output window E Print korns ADAS810 Generate envelope feature photon emissivity coefficient The program calculates envelope feature emissivities of type ADF40 for an ion of a complex element The program is a foreground interactive version of the mass production parallised background code ADAS810_offline The interactive version is designed for restricted sample testing and result display prior to large scale excution It requires the same driver data file types as the offline version but allows the user to modify some driver
38. ing up appropriate driver data sets for off line execution and ADAS810 for calculating feature emissivity coefficients First versions of two other utilities in series 8 are also included namely ADAS804 for simple effective potential Born omega and Upsilon calculation ADAS809 for conversion of an adf04 type 1 file to an adf04 type 3 file We shall upgrade ADAS809 in the near future to full non Maxwellian handling You will be aware of the gradual shift in the ADAS Project to making available some of our fundamental atomic structure and collision calculation capability Parts of this are suitable for interactive ADAS see series 7 and 8 but main calculations need to be done off line on powerful machines With the introduction of heavy species modelling to ADAS the link to off line calculation becomes essential and we are trying to make this as smooth as possible Working with off line structure and collision codes was one of the themes of the Winter School I have made the complete set of lecture notes presentations and tutorial exercises available in the ADAS documentation release see adas docs adas and atomic calculations course 1 would recommend however that those who wish to use the off lines codes should try to come to at least to the second part of the Winter School next occasion Nov 2003 at some stage Working on a specific example with the experts is worth a lot of words You will notice amongst many others two new ADAS data forma
39. ions a max min 7 The left hand button of a spectral range row defines configurations which contribute to lines in that range as requiring level resolution on the configuration list and that configuration is marked its button indicator light The selected configurations count is updated accordingly Remember to reselect an ion at 3 to update the configuration list sub window display after each alteration are shown in the boxes min The processing level count window is shown below 1 Clicking the Level Count button presents the window shown below The sub window to the left displays a count summary plot 2 Display of configuration counts and level counts for each ion in the selected ion range may be chosen Note that the Total Levels and Total 27 Configurations mav be shown prior to the calculating the survev spectrum Selected Levels and Selected Configurations require the survev spectrum to be calculated first 3 The graph displav scales mav be adjusted 4 Note the summary information The output options window is as shown below 1 The Text Output button activates writing to a text output file The file name may be entered in the editable File name box when Text Output is on The default file name paper txt may be set by pressing the button Default file name A pop up window issues a warning if the file already exists and the Replace button has not been activated 2 The primary ou
40. is stored in wrapper adaslib along with the xxdtes if c code In ADAS807 the passing files and internal naming of variables and routines for the mapping of adf09 files onto the adf04 levels hada name reversal Rather than a09_a04 which reflects the adf18 a09_a04 convention a04_a09 was used This has been altered There was an incorrectly named external function declaration in the xxcftr interface code xxcftr_if c This could have caused problems on some versions of UNIX ADAS312 would process adf26 files for beam emission but not beam stopping This was due to a faulty design which applied an error flag for unavailable transition information in beam emission to the beam stopping case also This has been corrected It was convenient at the same time to tidy up the comments at the end of the adf2 I adf22 output files and change the default pass file name to adas312_out pass from default txt ADAS312 has an unfortunate way of determining species and donor information which are used purely for information on the precessing screen The adf26 input filename is parsed for this information which effectively restricts it to central ADAS data or correctly named user data A trap has been inserted to se whether the input file conforms to this pattern and if not a message is displayed rather than random looking strings as at present ADAS801 A fault has been corrected in the translation of the configuration representation of Cowan to that of Eissne
41. ives the value of x y in data units under the cursor on the graph is provided Ambiguities in labelling on the file selection screen have been fixed Thus Browse is replaced by Select for choosing files Another JDL 5 5 array scalar problem has been fixed This was a most tiresome alteration in IDLS 5 which has caused a lot of extra work Note incidintally that ADAS801 can also handle the special case of H like configurations which are labelled n 2 etc that is with the bundling notation in the light ion GCR Project A subtle logic flaw in read_adf04 pro has been picked up When overwriting ionisation rate data from S lines the level and parent indices were occasionally incorrect Some of the files produced by ADAS204 are obsolete in particular the adf10 files These should now be generated using ADAS208 Some other formatted output files are also not necessary The output screen has been remodelled into necessary and optional sections The only mandatory one required to run are adas204_adf17 pass and or paper txt The others are optional Note that paper txt has re instated in the previous IDL ADAS version printing to it was suppressed C7 C8 C9 C 10 Further changes affect both the fortran and IDL More logic variables have been added to adas204 for and the method of specifing a passdir which was used to construct the output file names has been replaced Now an array of names is passed in together with an arra
42. le It is important to use this facility to find out what is broadly available in the dataset The possibility of browsing the comments appears in the subsequent main window also 7 Clicking the Done button moves you forward to the next window Clicking the Cancel button takes you back to the previous window H ADAS 510 INPUT Input Dataset Data Root fhome mart infadas adlag Central Data User Data _ Edit Path Name ke 10 adf40 dat hf 28 adf40 dat xe 10 adf40 dat Data File Browse Comments Cancel Done The processing options window has the appearance shown below 1 An arbitrarv title mav be given for the case being processed For information the full pathwav to the dataset being analvsed is also shown The button Browse comments again allows displav of the information field section at the foot of the selected dataset if it exists 2 Spectral intervals for which envelope feature emissivitv coefficients are available in the data set are displaved in the list displav window This is a scrollable window using the scroll bar to the right of the window Note there is a Filter field present for information Click anvwhere on the row for a feature to select it The selected feature appears in the selection window just above the feature list displav window 3 Xour settings of electron temperature electron densitv pairs outputs are shown in the temperature densitv displav window The temperatur
43. length interval and is a composite feature arising from very many lines from a single ionisation stage The F ACE is suitable as a descriptor in wavelength intervals and at spectral resolutions where the individual component lines are unresolved or only partly resolved This situation occurs with very complex heavy element ions for which it becomes helpful and economical to handle the envelope feature rather than the individual line emissivity coefficients FEC s The primary use of ADAS808 is to set up calculations for very heavy species and so the wavelength intervals such as Ag A above introduced as a focus for partitioning configurations are identified as the spectral intervals over which the envelope features are sought ADAS808 therefore provides drivers also for the F HEE calculations see ADAS810 for more details Program steps Interactive parameter comments The input window is as shown below 1 Enter the element symbol Note that the element symbol and nuclear charge number boxes are linked so if one of them is changed the other is 24 automaticallv updated Also set the minimum and maximum ion charges noting that the last ion of an element in this context is the hydrogen like stage with Z Zo 1 where z is the nuclear charge Three sets of electron temperatures must be specified These temperatures are passed through to the final drivers and ultimately are the temperatures used in the ADFO4 ADII and A
44. n stage The F FEE is suitable as a descriptor in wavelength intervals and at spectral resolutions where the individual component lines are unresolved or only partly resolved This situation occurs with very complex heavy element ions for which it becomes helpful and economical to handle the envelope feature rather than the individual line emissivity coefficients FEC s Following Chap 3 8 the emissivity of an individual line is specified as M Mu exc rec Eje Aja FUN N FONG 6 10 1 amp l v l This allows specification of the excitation photon emissivity coefficient PECL A Fg 6 10 2 and the recombination photon emissivity coefficient PEC LO A Gey 6 10 3 Each of these coefficients is associated with a particular metastable O or v of the X ae or XYY ions respectively Consider a spectral interval A A subdivided into XN pi LAN SA tiA Ay NN do tli FLAA Noy diN suppose that the j k spectrum line has a normalised emission profile j a A In general intervals as pix pix va 1 Also such a profile is a convolution of Doppler and instrumental functions Then the envelope feature photon emissivitv coefficient vector is defined as hin FPO IVA B PEGS p A dA 6 10 4 4 Xelo i jo is the natural wavelength of the J k spectrum line The default broadening assumed is Doppler with a Maxwellian distribution for the emitting ion at temperature T ion equal to the electron tempe
45. oupling and include many configurations For such systems the preparation of configuration lists for the ADF34 drivers is prohibitively tedious and the calculations are massive Automated handling followed by offline execution on massively parallel machines is essential In ADAS the automated high throughput is achieved by firstly sophisticated interactive set up of the ADF34 drivers ADAS808 fulfills this latter purpose The complete ADAS Baseline Atomic Data includes also various derived data classes In simple systems these other data are generated by interactive execution of the codes ADAS407 ADAS408 and ADAS208 For medium heavy element systems it is convenient to use ADAS808 to set up additional drivers so that these codes also may be executed automatically offline Finally the complexity of heavy element emission means in practice that spectral analysis must often be carried out on unresolved or only partially resolved transition array features rather than on individual spectrum lines In ADAS a new derived quantity called a feature photon emissivity coefficient F FEE is introduced analogous to the emissivity coefficient FEC is intrdoduced to describe these envelope features The associated code ADAS810 calculates such F FEE s and it is convenient for ADAS808 to prepare the drivers for offline execution of ADAS810 also Following interactive execution of ADAS808 all subsequent calculations and assembly of the complete ADAS Baselin
46. outines just using fortran This was tried with r8necip for as no string passing was involved However it proved necessary to introduce C glue code C 2 C 3 C4 C5 C 6 Removed r necip_if for and replaced with ranecip calc for and r8necip_if c There are some further issues with ADAS211 The recombining ion charge iz1 is calculated from the atomic number and isoelectronic sequence However the test to find the number of electrons in the isoelectronic was case sensitive Unfortunately ADAS807 produced adf08 files with mixed case Rather than failing unfortunately ADAS211 calculated silly quantum defects and defaulted to hydrogenic values The fix is to do the test having converted to an upper case sequence string We are attempting to put active string conversion into all codes at key places Note the conversion subroutine xxcase for in fortran adaslib The adf08 files produced automatically by ADAS807 caused more than just the problem of C 2 In the Li like case the level configuration strings dropped the full 1s2 shell The parsing routine in ADAS211 bbprs3 for did not cope very well As it does not know the number of electrons full shells below the currently open one are assumed filled Therefore 4p1 was taken as 182 2s2 2p6 3s3 3p6 3d10 4pl At least this time nothing was produced so the problem could be traced The solution is to modify ADAS807 to put in the 1s2 for the Li like sequence Yet another problem is with
47. parameters The interactive code can initiate the background code although the usual practice is for launch of ADAS810_offline from the command line independently of IDL ADAS via a PERL script see NOTES below Background theory 36 An envelope feature photon emissivity coefficient denoted by F AEE is defined on a wavelength interval and is a composite feature arising from very many lines from a single ionisation stage The F FEE is suitable as a descriptor in wavelength intervals and at spectral resolutions where the individual component lines are unresolved or only partly resolved This situation occurs with very complex heavy element ions for which it becomes helpful and economical to handle the envelope feature rather than the individual line emissivity coefficients FEEC s Following Chap 3 8 the emissivity of an individual line is specified as zt c DE FIN N D FON NS 9 10 1 This allows specification of de excitation i emissivity coefficient PEC Fe EA A 9 10 2 and the recombination photon emissivity coefficient PECL p Aja Gey 9 10 3 There are similar coefficients namely the charge exchange photon emissivity coefficient and the ionisation photon emissivity coefficient which are of less relevance here Each of these coefficients is associated with a particular metastable O or V of the X or X ions respectively Consider a spectral interval A A subdivided into XN pix intervals as AAO Ao Hi A
48. r by the subroutine eissner for The problem arose with occupation numbers greater than 9 and gave incorrect configuration strings in the output adf04 file Extensions have been made to several subroutines in adas idl_adas fortran adaslib to allow us to handle very heavy species These routines are cstrgrp for ceigrp for ideiss for i4jgrp for idlgrp for idndec for i4ngrp for i4pgrp for idschr for xxcftr for and xxdtes for It is only the latter two which might have some impact xxdtes for is a substantial extension It does require the other revised subroutines Please let us know if you have any unexpected stops from xxcftr for or xxdtes for ADAS407 The subroutine d7auts for checks that the number of entries in the orbital energy list of an adf04 files equals the number of orbitals identified in the configuration lists of the file For heavy species with empty inner shells this is overstringent and can cause unnecessary program termination It is sufficient for the identified orbitals to be a subset Corrections and updates to data ADAS v2 5 6 to ADAS v2 6 D 1 D 2 D 3 D 4 Manuel Bautista s adf09 27 28 have been changed again Some files may remain the same but the entire directories have been updated from his files Twice before release latest update Jan 2003 adf09 mb00 he adf27 helike mb00 he adf28 helike mb00 he New Li like adf04 data for Ar and Fe from Allan The reference is A D Whiteford et al J Phy
49. rature T used in the collisional radiative modelling of the FEB s This consitutes a minimum broadening The integral in equation 6 10 4 is then expressible in terms of error functions as F PEGO O Y PECL Af erfe A 0 j k LEA 6 10 5 erfe A 6 1 2 O j k 2 jok e KT Mp m ton where O 4 4 and M is the emitting ion mass Ty My m In principle the minimal Doppler broadened F FEE s can be convolved with effective instrument functions and or representations of wavelength dependent filters These are called filtered F HEE s and they are structurally the same as the unfiltered F FEE s F PECL NN PF PECL 6 10 6 G f ee O s i where F i 1 npix denotes a filter The archiving is unchanged except for the need for a filter code to be assigned as part of the archive F HEE data are extracted from archived files of type ADF40 They are interpolated by cubic splines in electron temperature and density to provide results at an arbitrary set of temperature density pairs The code can select the temperature density pairs graphically For this purpose the F FEE must be contracted over wavelength The functional used for interactive graphical pair selection is the total photon count over the wavelength interval namely w wm exc 0 1 eee T PEC F PEGI 6 10 7 i oO Program steps Interactive parameter comments Programs of series ADASS which make
50. rt dwa Ewismenl Were fas Bee emk Kipka damreh METI Et Table il Mir igrunrrsirzg mpiinna dala mi press demm in preureril El caer atone The output options window appearance is shown below 1 There is a choice of method for examination and display of the results data Click either the Standard Plot Option of the Burgess Plot Option The sub window varies depending on this choice 2 Graphical display is activated by the Graphical Output button This will cause the graphs to be displayed following completion of this window When graphical display is active an arbitrary title may be entered which appears on the top line of the displayed graph By default graph scaling is adjusted to match the required outputs Press the Explicit Scaling button to allow separate explicit minima and maxima for the graph axes of the omega and Upsilon plots to be inserted 3 Hard copy is activated by the Enable Hard Copy button The File name box then becomes editable If the output graphic file already exits and the Replace button has not been activated a pop up window issues a warning A choice of output graph plotting devices is given in the Device list window Clicking on the required device selects it It appears in the selection window above the Device list window 4 The Text Output button activates writing to a text output file The file name may be entered in the editable File name box when Text Output is on The default
51. rying that is they have been subject to some averaging over resonant structure It is evident that if the width of the averaging interval above is AE then the generation of Maxwell averaged collision res avge strengths at temperature T is meaningful only if kT gt gt AE The numerical quadrature res avge procedure takes account of dipole non dipole and spin change forms for excitation The behaviours for transition i j are as dipole Q FS log X F non dipole Q F F X 9 9 1 spin change Q F X F where F and F are constants In the dipole case asymptotically F 34 Si is the line strength for the transition For ionisation the dipole form with F S replaced by the single constant F is 30 appropriate For electron impact excitation of ions the collision strength tends to a finite value at threshold In contrast for neutral atom excitation and ionisation the collision strength tends to zero at theshold with the threshold behaviour Q aX Usually 1 2 for neutral atom excitation and 1 for ionisation of both atoms and ions For the tabulation X Q k 1 n the quadrature Y Q exp E kT d e kT 9 9 2 0 is expressed as Y AE KT Jexp AE KT r 9 9 2 fex Jexpl X AE kT dX 1 MEE x and the integral divided into the ranges and The asymptotic behaviours extrapolating 1 Xx X n from the first and last two tabular point
52. s B 35 3729 3740 2002 adf04 lilike lilike_adw02 ar15 dat adf04 lilike lilike_adw02 fe23 dat PECs and SXBs from relatively high n in the hydrogen like low Z elements have been added These are generated with the off line v2bndl code Datasets for He were added in the 2 5 6 release but Carbon was omitted These have now been added to the adf13 adf15 96 directories with the bnd extension adf13 sxb96 c sxb96 c_bnd c5 dat adf15 pec96 c pec96 c_bnd c5 dat Lithium has been added from the GCR Project Many files are required adf03 4 7 8 10 1 1 13 15 17 18 25 approximately 10Mb of data in total New fundamental data for excitation from Connor and Don Griffin with ionisation from the Auburn group Stuart and Mitch Pindzola The DR data came from the DR project from Nigel All other data and manipulation from ADAS GCRAadfll sets for ionisation recombination and power have the year token designation 96 in keeping with the other light elements A baseline 89 dataset has also been included which adds CX recombination and power and a specific line power dataset for compatability adf03 atompars atompars_mm li dat adf04 adas 3 cpb02_1s li0 dat adf04 adas 3 cpb02_Is lil dat adf04 adas 3 cpb02_Is li2 dat adf04 adas 3 cpb02_n li2 dat adf04 copmm 3 1s li0 dat adf04 copmm 3 1s lil dat adf04 copmm 3 Is li2 dat adf04 copmm 3 1s li3 dat adf04 lilike lilike_cpb02 li0 dat adf04 helike helike_cpb02 li1 dat adf04 hlike hlike_cpbO2 1i2 dat
53. s and the colour of the surface Finally the form of the axes that is logarithmic or linear can be chosen from drop down menus 2 A two dimensional projection on the Te Ne plane is displayed Note that the grid lines are those of the actual data in the source file The code provides a sophisticated method for selecting Te Ne pairs by mouse click which allows the user to track over interesting parts of the surface 3 Move the mouse cursor over the lower Te Ne grid A tracking pointer moves over the surface in the upper displav Click the left mouse button to select a Te Ne pair A svmbol marks the selection on the Te Ne grid in the lower displav and a marker also appears on the surface in the upper displav Continue to select point pairs as required 4 Note that the position of the cursor in Te Ne space is shown numerically for precise positioning 5 Control buttons at allow adjustments to your selection set Pairs can be added at the beginning or end of the set or inserted between pairs Also a pair can be deleted Finally the whole set of pairs can be erased 6 Click Done on completion to return to the processing options window The pairs selected will be present in the editable table Note that conventional entry or modification of user data with Table Editor remains an option as before The output options window appearance is shown below Data File Name home martin adas adf40 xe 10 adf40 dat Browse Comments
54. s are used in the evaluation of the first and last integrals respectivelv The second integral is evaluated piece wise in each tabular interval with the integrand locally fitted to a quadratic in either a linear scale ie Q c c X c X 23 or logarithmic scale picture ie nQ c Hc inX c InX 23 Quadrature precision is checked from the exact integrals of the approximate forms namelv dipole Y ES In 1 F EEK14 F JAE kT non dipole Y F F AE kT EEI AE KT 9 F AE kT spin change Y EEQ 1 F JAE KT IFF 9 3 where EEI x exp x E x and EE2 x exp x E x with E and E the first and second exponential integrals A further verification on the quadratures is from the exact integrals for Q constant Q X 1 and X X I which are exact for the quadratic fit linear scale option The program has a capability for comparison and display In addition to the input ADFO4 type 1 file for conversion it can accept a second ADF04 type 3 file The temperature set for output is copied from the latter reference file Additionally the collision data for a selected single transition may be graphed along with the corresponding data from the reference file if it exists The usual display and output routing facilities are provided Program steps Interactive parameter comments Remember to ensure you have a defaults directory allocated This should have the pathway
55. t plt file w 9 adfl5 dat f output pec file w_9_adf40 dat output f_pec file lmetr false true to resolve metastables ltscl true f true for z scaled temperatures ldscl false f true for z scaled densiities lbrdi true true for ion temp broadening 13 no of temperatures 2 000E402 5 000E 02 1 000E 03 2 000E 03 temperatures K 5 000E403 1 000E 04 2 000E404 5 000E 04 1 000E 05 2 000E405 5 000E 05 1 000E 06 2 000E 06 5 no of densities 1 000E 11 1 000E 12 1 000E413 1 000E 14 f densities cm 3 1 000E 15 2 no of wavelength intervals 128 2 759e 01 2 112e 03 pixel no wvmin wvmax triplets 128 5 890e 01 2 242e 00 wavelenths in Angstrom Notes ADAS809 Non Maxwellian modelling change adf04 file type The program converts an ADFO4 type 1 file to a standard ADF04 type 3 file That is an ADFO4 file with collision strength data is converted to an ADFOA file with Maxwell averaged collision strengths Background theory The tabulation of the electron impact excitation and ionisation data in an ADFOA type 1 file is of collision strength Q versus threshold parameter X X AE where AE is the energy of the transition i gt j and is the incident electron energy with the target in the lower energy state i At the finest energy resolution collision strengths display detailed resonance structure It is assumed that the tabulated collisions strengths in the ADF04 type 1 file are smoothly va
56. the seq string It looks human readable but is fixed format IDL writes single character sequences as C via A2 format However this is incorrectly interpreted in adas211 for We have changed prop_adf08 pro to write out C Closed shells becomes a bigger issue for heavy complex ions which is the trend of our development at the moment The configuration field in the standard adf04 file format is insufficiently long to put the complete configuration for a heavy ion nor is it helpful for most purposes to see the occupancies of inactive inner shells We have more advanced versions of the configuration handling parsing detection amp conversion between forms Eissner and Standard subroutines These include xxpars for xxprs1 for xxprs3 for xxcftr for xxdtes for and so on These will deal with arbitrarily complex systems and verify inner shell undeclared occupancy by examing the ground state configuration of the ion in the adf00 look up tables We are introducing them into the ADAS releases as and when we have checked through all their dependencies A missing utility subroutine for ADAS811 has been added to the IDL library idindf pro This is a complement to the fortran idindf for subroutine but in this case since it is simple a version has written directly in IDL Some new functionality has also added A Print All button which prints all transitions of a single type to a file is included Also a new information field which g
57. tput is to an adf34 sub directory which can be entered and or selected 28 Table 9 08a Table 9 08b Table 9 08c Table 9 08d lllustration w_7_adf34 dat 2 5 2 10 1 0 5 d 09 5 d 11 2 0130 10 10 65 040 0 35 74 8 w A4f13 5s2 0 4f13 5s2 5p6 74 8 w 4 13 5s2 3 4 13 5s2 5p5 6pl 74 8 w 4f12 582 7 4 12 5s2 5p6 6pl 74 8 w 4f13 5s2 4f13 5s2 5p5 6sl 74 8 w 4f12 5s2 4f12 5s2 5p6 6sl 74 8 w 4f13 5s2 4f13 5s2 5p5 5al 74 8 w 4f13 5s2 4f13 5s2 5p5 Gal 74 8 w 4f12 5s2 4f12 5s2 5p6 Sal 74 8 w 4f12 5s2 4f12 5s2 5p6 6dl w_7_inst dat z0 74 zi 7 parity 1 3 paritv 2 6 E2 3 M1 3 scale 93 99 93 93 93 temperature 25 2 00000E 02 1 00000E 04 1 00000E 05 2 20000E 06 2 20000E 06 2 20000E 06 2 20000E 06 5 00000E 02 5 00000E 03 2 00000E 04 2 00000E 05 2 20000E 06 2 20000E 06 2 20000E 06 1 00000E 03 5 00000E 04 5 00000E 05 2 20000E 06 2 20000E 06 2 20000E 06 2 00000E 03 1 00000E 06 2 00000E 06 2 20000E 06 2 20000E 06 w_7_pp dat Al Allan Whiteford 15 12 79 1 C Comments are for losers amp FILES ifgfile ifg w_7_adf34 dat outfile w_7_adf04 dat amp END amp OPTIONS ip 1134988 8 coupling IC aval YES isonuclear NO lweight NO comments 2 numtemp 14 amp END 12 3 4 5 6 7 8 9 10 11 12 13 14 w_7_pec_drv dat wt 9 74 10 1475969 1 w 9 adf04 dat input adf04 file 29 w 9 adfll dat f outpu
58. ts adf38 and adf39 These are for photo excitation and photo ionisation cross sections and reflect on going work of Nigel Badnell and Mike Seaton This extends and revises some bits of the Opacity Project I hope this will lead onto a capability for handling photo ionised plasmas in ADAS sometime in the future For the moment the specifications of ad38 and adf39 have been added to the IDL ADAS User Manual appxa 38 pdf appxa 39 pdf A final word concerning the ADAS User Manual It has of course become very large and needs frequent updating especially when new codes are being brought on stream and the ADAS data formats are being extended to cope with new situtations I have therefore decided to align the manual version with the ADAS release and enter chapters on new codes in it as they are released This means that the up to date manual is really the computer version in the docs directory or accessible via http adas phvs strath ac uk Also the manual is now more of a road map That is it includes entries for codes which we have working in preliminary version but have not yet had the time to bring up fully into IDL ADAS and data formats which are now necessary but have not been filled yet with significant amounts of central ADAS data yet Corrections and additions to codes ADAS v2 5 6 to ADAS v2 6 C 1 There are problems in using ADAS811 particularly on true 64 bit DEC Compag HP machines It arises when making call_external IDL r
59. tures etc on the processing screen and of output file routing on the output screen overiding the adf42 driver file All other parameters are predetermined or set in the driver file Note the use of namelists where possible in the driver file structure amp FILES dsn04 home adas adas adf04 adas 6 mom97_ls c2 dat dsni8 NULL dsn35 NULL dsni5 test adf15 pec dat dsn40 test adf40 fpec dat dsnil test_adfll_plt dat dsnlif test adfll plt filter dat amp END amp ION element C z0 6 zl 2 ip 386241 0 amp END amp META nmet 1 imetr 1 1 amp END amp PROCESS liosel FALSE lrsel FALSE lisel FALSE Insel FALSE 881 FARSE zeff 0 0 amp END amp OUTPUT lmetr FALSE ltscl FALSE ldscl FALSE lbrdi FALSE numte 5 numtion 0 numth 0 numdens 5 numdion 0 numwvl 3 amp END 1 800e404 4 500e 04 9 000e 04 1 800e405 4 500e 05 1 000E 11 1 000E 12 1 000E 13 1 000E 14 1 000E 15 64 1 500e 00 3 00e 00 32 1 000e 01 1 00e 02 32 4 500e 02 8 00e 02 Interactive parameter comments The file selection window is as shown below 5 10 Two primary files are required namelv an adf04 for the ion whose spectral line and envelope emissivities are required and a driver file of format adf42 The latter is optional and provides conditions of electron temperature and density spectral ranges etc This
60. use of data from archived ADAS datasets initiate an interactive dialogue with the user in three parts namely input file selection entry of user data and disposition of output The file selection window has the appearance shown below 1 Data root shows the full pathway to the appropriate data subdirectories Click the Central Data button to insert the default central ADAS pathway to the correct data type Note that each type of data is stored according to its ADAS data format adf number Click the User Data button to insert the pathway to your own data Note that your data must be held in a similar file structure to central ADAS but with your identifier replacing the first adas to use this facility 2 The Data root can be edited directly Click the Edit Path Name button first to permit editing 3 Available sub directories are shown in the large file display window Scroll bars appear if the number of entries exceed the file display window size 4 Click on a name to select it The selected name appears in the smaller selection window above the file display window Then its sub directories in turn are displayed in the file display window Ultimately the individual datafiles are presented for selection Datafiles all have the termination dat 5 Once a data file is selected the set of buttons at the bottom of the main window become active 6 Clicking on the Browse Comments button displays any information stored with the selected datafi
61. vious window The processing options window appearance is shown below 1 An arbitrary title for the run may be set If an archive is in use then its name is given Also the index of the archive can be browsed 2 The nuclear and ionic charges should be specified along with Zeff the effective ion charge Normally Zeff is set equal to the ion charge 1 3 Specify the parent term or level Note that the code can deal with LS coupled terms or levels and with J resolved parents in Jp j coupling If the parent is a term leave the Jp field bank Input archive file Data Root hemes summers s adas archGb4 7 Edit Path Name Archive File A old archive new archive v no archive F Refresh from Archive Archive Index Number LS itest adas born dat test adas bom dat browse index cancel done Specify the details of the lower and upper levels of the transition For a transition between terms leave the fields JTI and JT2 blank Note that the number of equivalent electrons are required for the initial and final shell of the active electron together with fractional paranetages associated with the identified parent The binding energy is the energy rydbergs required to remove the active electron leaving the residual ion in the identified parent state Select required energies at which the collision strength should be calculated and temperatures at which the Upsilons should
62. window has the appearance shown below 1 An arbitrary title may be given for the case being processed For information the full pathway to the dataset being analysed is also shown The button Browse comments again allows display of the information field section at the foot of the selected dataset if it exists A summary of the number of electronic transitions and energy levels is also given 2 Transitions for which electron impact excitation data are available in the data set are displayed in the line list display window This is a scrollable window using the scroll bar to the right of the window Click anywhere on the row for a line to select it The selected transition appears in the selection window just above the line list display window This single transition will displayed 3 The output rate coefficient for the selected transition may be fitted with a polynomial This is as a function of temperature Clicking the Fit Polynomial button activates this The accuracy of the fitting required may be specified in the editable box The value in the box is editable only if the Fit Polynomial button is active 33 ADAS809 PROCESSING OPTIONS r Title for Run ile Name disk3 summers adas adf04 helike helike hps02he ti cropped dat Browse Comments Number of Electron Impact Transitions 171 Number of Index Energy levels 19 Fit Polynomial value 15 Select Specific Electron Impact Transition LOWER LE
63. wn below 1 2 An arbitrary title may be given for the case being processed For information the full pathways to the datasets being processsed are also shown The button Browse comments again allows display of the information field section at the foot of the selected dataset if it exists The main inputs follow that those of ADAS208 Your settings of electron temperature ion temperature and neutral hydrogen temperature are shown in the temperature display window The temperature values at which the excitation rate coefficients in fact upsilons are stored in the selected adf04 input are also shown for information The program obtains the output from the adf42 driver file if available A similar pattern is shown in the Density sub window although there is no Input from the adf04 file 41 4 Selection of Default temperatures is somewhat different from the usual ADAS pattern A drop down menu allows choice from a number of favoured sets such as the GCR Standard set 5 Selection of metastables is done from a scrollable button list rather than a pop up gt ADAS810 PROCESS OPTIO adf04 file home summers adas adf04 helike helike hpsl02he dat Browse Comments 2 adf18 file home summers adas adf18 a17 p208 Browse Comments Temperatures Densities JINDEX Electron Io Neutral Input JANDEX Electron Ion Hydrogen Value J Densities Densities H 1 5 000 03 5 000E 03 5 000E4H03 5
64. y indicating whether output is required or not b4spfl pro is no longer necessary as its functionality has been replaced by an updated adas204_out pro This output widget does not require the cw_adas204_out compound widget Removed b4spfl pro and cw_adas204_out pro Yet another missed JDL 5 5 array scalar problem in ADAS402 has been fixed Also the polynomial fit tolerance query in cw_adas402_proc pro has been fixed There was a logic flaw when cycling between range boxes in explicit scaling of output graphs if no z range is present then pressing lt return gt in y max caused a crash as the program tries to give input focus to z min This bug affects all widgets which use cw_adas_ranges ADAS209 did not include bundling of S lines This has proved necessary for H like lithium The approach taken is to calculate the rates from the data in the adf04 file and then take the statistical sum of rates This sum is then divided by the new bundled exponential factor in order to generate valid adf04 S lines Also we have added the name of producer to the output bundled adf04 file automatically via xxname for subroutine There is an odd problem with adas_in_v2 pro for IDLv5 4 on DEC machines It looks like the array of one vs scalar problem and has the same solution but it appears to be specific to this version machine combination Adding a 0 is harmless to other machines so we have done so C 11 A problem appeared in ADAS703 which failed
65. y that is 10 22 a 11 b etc Thus in Standard form 2p 6f 11s is represented by 2p6 6fb bsI In Eissner form each orbital starting from 1s is indexed The index is an integer up to 9 but continues through the upper case alphabet and then through the lower case alphabet Thus 1s 1 2p 2 4f A A portion of the conversion table is Orbital 1s 2s 2p 3s 3p 3d 4s 4p 4d 4f Eissner 1 2 3 4 5 6 7 8 9 A Orbital 5s 5p 5d Sf 5g 6s 6p 6d 6f 6g Eissner B C D E F G H I J K The shell occupancy is represented as a two digit integer as 50 q and this precedes the shell index character Thus again the shell is represented by a three character field but is written with no separation between the fields in the whole configuration Thus in Eissner form 1s 2s 2p 6g is represented by 52152256361K ADAS works freely with both notations and subroutines in the ADAS library transform from one to the other Eissner form is the preferred form in ADAS series 7 codes since structure calculations there use the Autostructure code Standard form is the preferred form in ADAS series 8 codes since structure calculations there use the Cowan O Mullane code Eissner form is the most compact and is generally adopted with very complex configurations A promotional strategy Consider a group of ions fet E Z Zn Zmax J Of the element 4 A set of configurations targetted on a structure calculation is established bv promoting

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