ADAS402: Isonuclear sequence data
Contents
1. electron temperature electron density pairs at which the collisional radiative coefficient data are produced The output is therefore suited to giving the run of a coefficient through a density temperature plasma model atmosphere A minimax polynomial approximation to the output is also provided In the display graphs it is possible to show coefficient curves for adjacent ions of the iso nuclear sequence to the one sought This data is taken directly from the database without interpolation at the available temperatures and at one density only Such data should be viewed as an assistance in verifying that the interpolation has proceeded satisfactorily ADAS User manual Chap5 02 17 March 2003 Program steps These are summarised in figure 5 2 Figure 5 2 repeat begin select data select project enter ion charge gt class gt year element data subclass gt and resolution temps amp densities repeat compute cubic repeat ps spline and i i minimax fits output tables display coefft y and graphs eng s graphs Interactive parameter comments 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 and move to the series 4 menu Selec2. of data A Default year may be entered which will be used if there is no data of the required class in the Year of data Enter the so nuclear sequence symbol There are two primary organisations of adf11 data Standard ionisation stage to ionisation stage and Partial metastable to metastable Select the type required in the drop down menu at Type of master file If Partial is chosen further selections may be made Within the Partial type of organisation true metastable to metastable subdivided data is called Resolved Stage to stage data can be written into the Partial type of structure and is then called Unresolved This un necessary duplication is because of a historical precedent in IBM ADAS at JET Select as required in the drop down menu at Specify partial type code Finally within the Resolved type enter the particular metastable to metastable sought at Parent index and Recombined ion index Note that the items selected here are only used when the dataset is opened at the Processing Options stage Initiate the search for the required dataset sub list by clicking Search The search result window has the appearance shown above 1 2 If there is a choice of files click on the one you wish Return to the input window by clicking Select e Search results Y The following files match the given parameters Filename ckages adas adas adf11 acd96 acd96_n dat packages adas adas adf11 acd96 acd96_n dat packages a
3. 05 3 000D 13 887D 12 2 320D 07 2 000D 03 6 444D 05 3 000D 13 8 800D 13 5 800D 07 5 000D 03 611D 06 3 000D 13 2 641D 13 160D 08 000D 04 3 222D 06 3 000D 13 9 916D 14 2 320D 08 2 000D 04 6 444D 06 3 000D 13 3 623D 14 4 640D 08 4 000D 04 289D 07 3 000D 13 1 306D 14 TAYLOR COEFFICIENTS OF MINIMAX POLYNOMINAL LOG10 RATE COEF VS LOG10 TEMP EV 1 1 081408270D 01 2 5 418948485D 01 3 1 170001862D 01 4 3 362251493D 01 5 4 419515956D 01 6 3 099482897D 01 7 1 232626522D 01 8 2 789343502D 00 9 3 349773410D 01 10 1 658318363D 02 LOGFIT DEGREE 9 ACCURACY 17 63 END GRADIENT LOWER 0 54 UPPER 3 02 AAA AAA SE Notes ADAS User manual Chap5 02 17 March 2003
4. ADAS402 Isonuclear sequence data graph and fit coefficient The program interrogates iso nuclear master files of type ADF11 It extracts collisional radiative coefficients of various classes relevant to plasma modelling stored in iso nuclear sequence sets The data may be interpolated using cubic splines to provide the coefficients at a selected charge state of the chosen element and at selected electron temperature electron density pairs A minimax polynomial approximation is also made to the data Interpolated data and some comparative source data are displayed and a tabulation printed The printed output includes the minimax polynomial approximation Background theory The source files to be interrogated are of both ordinary stage to stage and generalised metastable resolved collisional radiative coefficients A file is associated with an element and a data class There are separate files for ordinary and generalised data The classes of data include the collisional dielectronic recombination coefficient ACD the collisional dielectronic ionisation coefficient SCD the collisional radiative charge exchange recombination coefficient CCD the collisional dielectronic recombination cascade bremsstrahlung radiated power coefficient PRB the collisional radiative charge exchange recombination cascade power coefficient PRC the collisional radiative metastable cross coupling coefficient QCD and the collisional dielectronic parent cro
5. RGE 00 RECOMBINING ION CHARGE 6 00 RECOMBINED ION CHARGE 5 00 OXYGEN ACD STUDY 28 03 92 FILE JETSHP ACD89 0 DATA LOGFIT DEGREE 9 ACCURACY 17 63 END GRADIENT LOWER 0 54 UPPER 3 02 DENSITY 2 51D 13 CM 3 11 10 ACD cm3 s 1 FILE JETSHP ACD89 0 DATA DENSITY 2 51D 13 CM 3 TEMP K TEMP EV TEMP K Z1 2 DENS CM 3 RATE COEFF CM 3 S 1 160D 04 1 000D 00 3 222D 02 3 000D 13 304D 11 1 740D 04 1 500D 00 4 833D 02 3 000D 13 037D 11 2 320D 04 2 000D 00 6 444D 02 3 000D 13 8 965D 12 3 480D 04 3 000D 00 9 667D 02 3 000D 13 7 061D 12 5 800D 04 5 000D 00 611D 03 3 000D 13 5 250D 12 8 120D 04 7 000D 00 2 256D 03 3 000D 13 4 213D 12 160D 05 000D 01 3 222D 03 3 000D 13 3 343D 12 740D 05 500D 01 4 833D 03 3 000D 13 2 511D 12 2 320D 05 2 000D 01 6 444D 03 3 000D 13 2 058D 12 3 480D 05 3 000D 01 9 667D 03 3 000D 13 501D 12 5 800D 05 5 000D 01 611D 04 3 000D 13 002D 12 8 120D 05 7 000D 01 2 256D 04 3 000D 13 8 179D 13 160D 06 000D 02 3 222D 04 3 000D 13 9 607D 13 740D 06 500D 02 4 833D 04 3 000D 13 769D 12 2 320D 06 2 000D 02 6 444D 04 3 000D 13 2 544D 12 3 480D 06 3 000D 02 9 667D 04 3 000D 13 3 266D 12 5 800D 06 5 000D 02 611D 05 3 000D 13 3 095D 12 8 120D 06 7 000D 02 2 256D 05 3 000D 13 2 548D 12 160D 07 000D 03 3 222D
6. das adas adf11 acd96 acd96_n dat nackages adas adas adf11 acd89 acd89_n dat Cancel Select The processing options window has the appearance shown below ADAS User manual Chap5 02 17 March 2003 ADAS User manual Data file and iso nuclear sequence information is given A particular charge state of the iso nuclear sequence should be selected This is by entering any one of the three fields namely element nuclear charge nuclear charge number or symbol recombining ion charge or recombined ion charge The extracted data is interpolated by a cubic spline to the selected ion and user temperature density pairs for graphical display and tabular output Additionally a polynomial approximation may obtained by making the appropriate selections Select temperature and density pairs for data output Output The source data is held in two dimensional arrays that is as a function of electron temperature and electron density The source Input values are also shown The table may be edited by clicking on the Edit Table button The ADAS Table Editor window is then presented with usual set of editing operations available The displayed graph of the interpolated coefficient as a function of electron temperature also shows some additional curves from the dataset for comparison These additional curves are drawn directly from the dataset and are not interpolated Thus they must be at fixed electron density Specify the Approximate
7. density to be extracted The nearest fixed density in the dataset will be used for the comparative curves Clicking the Done button causes the next output options window to be displayed Remember that Cancel takes you back to the previous window The Escape to Menu icon is also available for a quick exit at the bottom left hand corner ALIADOS PASIM TENS Chap5 02 17 March 2003 The Output options window is shown below Broadly it follows the pattern of other ADAS interrogation codes 1 Graphical output is enabled by clicking on the button Default scaling of graphs may be over ridden by appropriate selections 2 Hard copy may be enabled and the type of output device selected 3 As usual a line printer text output file summarising the interrogation may be produced ADAS402 OUTPUT OPTIONS The graphical output is as shown below ADAS User manual Chap5 02 17 March 2003 Illustration The output from the program is illustrated for the collisional dielectronic recombination coefficient of the member OF of the oxygen iso nuclear sequence recombining to form the lithium like ion ot A standard unresolved master file data set is used The graph shows also a number of adjacent ionisation stages Figure 5 2a ADAS User manual Chap5 02 17 March 2003 12 _ 10 VY S 13 10 14 10 10 10 10 10 104 electron temperature eV Table 5 2a OXYGEN ACD STUDY 28 08 92 DATA GENERATED USING PROGRAM ADAS402 NUCLEAR CHA
8. ss coupling coefficient XCD the collisional radiative excitation total line power coefficient PLT and the collisional radiative excitation specific line power coefficient PLS Altogether there are nine classes The internal organisation of the data is different depending on whether they are stage to stage data prefix U or no prefix or metastable resolved data prefix R The data classes QCD and XCD do not occur in the stage to stage case The classes are summarised below Coll diel recom coefft R amp U or none Coll diel ionis coefft R amp U or none Coll rad charge exch coefft R amp U or none Coll diel recom brems power coefft R amp U or none Coll rad charge exch recom power coefft R amp U or none Coll rad metastable cross coupling coefft R Coll diel parent meta cross coupling coefft R Coll rad excit line power coefft R amp U or none Coll rad specific line excit power coefft R amp U or none The span and density of N and T values in the data set are designed to minimise the need for elaborate interpolation and extrapolation In application linear interpolation is in general sufficiently accurate and data extraction is very rapid However for the interrogation program the data are interpolated by cubic splines in the order N T The interpolations are carried out in the log log plane with zero curvature end conditions on the splines The program accepts a set of
9. t ADAS402 The file selection window is illustrated below Conventional file selection and selection via a directed search are possible ADAS 402 INPUT ADAS User manual Chap5 02 17 March 2003 8 Buttons are present to set the data root to that of the Central data or to your personal User data provided it is in ADAS organisation Alternatively the data root may be edit explicitly Available data sets are shown in the file display window Selection is made by clicking on the appropriate name whereupon it appears in the selection window above There are very many data sets of type adf1 1 grouped by year element and data class A search strategy is available based on initial identification of an group of files of particular year and type and then conventional selection from the group list For dataset search select the iso nuclear master class first A drop down menu is offered The radiated power data classes PLT PRB and PRC can include the attenuation due to an energy filter Enter the filter if required At this stage only a very limited amount of filtered power data has been placed on the workstation database The naming convention is defined in the adf11 specification To allow further distinction of data within the same year a prefix can be used within the dataset name structure eg acd93r_ lt prefix gt _o dat Enter this if required at Member prefix Enter the two digit year number of the data required at Year
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