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ADAS704: Postprocessor - Autostructure > adf18 file

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1. oic Data File olg Browse Comments Cancel Done The processing options window has the appearance shown below 3 There are only limited options on the processing screen At a the Spin of the recombined system targetted is specified That is spin system of the initial metastable nl electron system 4 The n shell weighting factor is a little complicated It is defined as 2 indistinquishable composite metastable parent weight spin system weight fraction of total possible spin weight for the composite parent proportion of required metastable parent in the indistinquishable parent composite For example 2s 2p n for the D parent n shell weighting factor 12 8 arising from composite parent weight 16 D and P are indistinquishable both contributing to the n system spin weight fraction 0 25 from 1 1 3 since singlet and triplet spin systems can result from these parents proportion 0 625 since D is 10 10 6 of the indistinguishablecomposite parents Further examples are given in the archived adf18 files V ADAS704 PROCESSING OPTIONS Enter post processing data Spin 2S 1 of bound levels 1 n shell weighting factor 21 3000 a Free state minimum energy ryd 4 61000 Free state maximum energy ryd 4 63000 ES b Cancel Done La c 5 At b t
2. ADAS704 Postprocessor Autostructure gt adf18 file This is a new code which provides one of the last links in the chain of processing required in the GCR Project for the generation of complete collisional radiative data for light elements see also ADAS807 and GCR Project bulletin no 2 The code constitutes a third post processing option on the Auger rate coefficient data output from ADAS701 Autostructure It creates a part of the cross referencing file of type adas adas adf18 a09_p204 which links dielectronic data into the bundle nS population code ADAS204 The part in question is some supplementary data which allows for Auger breakup going from n shells built on one parent metastable to a different metastable but not via a common spin system Such Auger processes must occur via LS coupling breakdown and although small for light element ions are sufficient to drop the high level populations markedly To obtain these supplementary rates it is necessary to go back to basic ADAS701 calculations in intermediate coupling ADAS704 then processes the intermediate coupling calculation data to give the required supplement Background theory To be added Program steps These are summarised in the schematic below Figure 8 4 select olg and scan olg file and acquire ionisation begin oic outputs from ___s _lassemble level potentials rel to ADAS701 calcs list and active
3. he Free state maximum and minimum energies span the range of resonances n shells built on metastables and must be used to isolate the band of free electron energies which pick up the correct final metastable The output options window appearance is shown below 6 There is no graphical display 7 The output file sought at b is the supplementation data Note that the rest first part of the adf18 a09_p204 cross reference file is straightforward and existing samples can be modified quickly for other cases ADAS User manual Chap8 04 17 March 2003 ADAS704 OUTPUT OPTIONS Text Output Replace Default file name LY File name paper txt a adf18 a09_p204 Auger rates Replace Default file name LW File name paper txt b Choose output files Cancel Done c Illustration The output adf04 file from post processing AUTOSTRUCTURE intermediate files for Ar is shown in table 2 03a Levels 4 and above are autoionising R lines are generated for resonance capture into these double excited states as a function of electron temperature with the autoionising rate entered into the column immediately following the transition indices There is only a single parent state S in this case Table 8 04a Supplementary LS breakdown autoionisation data between parent spin pai
4. parents and set parent list output temps output ADF04 evaluate electron prepare resonance scan oic file for specific ion file lt impact excit capture coeffts amp lt radiative and and text file end coeffts and data assemble autoion autoionisation lines recomb data lines rates ADAS User manual Interactive parameter comments Move to the directory in which you wish the output text file produced after executing any ADAS program paper txt is the default to appear There is no graphic output from this program Initiate ADAS704 from the program selection menus in the usual manner The file selection window has the appearance shown below 1 The input file is the intermediate coupling oic file from the ADAS701 Autostructure run Note that by convention a user should assign a separate fautos sub directory for such datasets from ADAS701 in his her master fadas directory rather that the usual pass sub directory Note that the oic file should be obtained for a set of n shells in one pass selected to match to representative levels and span n shells up to some last n shell from which extrapolation can safely be performed 2 Buttons and controls follow the usual pattern Chap8 04 17 March 2003 Z ADAS704 INPUT Input oic Dataset Data Root home mog adas autos AN a Central data User data Edit Path Name oic
5. rs 891E 10 891E 10 891E 10 891E 10 4 4 4 4 Q using XXXX Code ADAS704 Producer Martin O Mullane Date 21 09 00 qaaqaaqaaqaagaan Notes ADAS User manual 155E 10 891E 10 613E 10 O71E 07 155e 06 884e 06 Spin breakdown Auger rates calculated from AUTOSTRUCTURE Chap8 04 17 March 2003

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