ADAS810: Generate envelope feature photon emissivity coefficient
Contents
1. Append i Replace File Name jadas810_adf40 pass F Total power adfll plt unfiltered i Append _ Replace File Name jadas810_aaf11 _plt pass F Total pover adfll plt filtered J Append i Replace File Name adas810_adf11_plt_filter pass Choose output options c 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 4 The Total power adf11I plt unfiltered file comprises the total radiated power in the spectral intervals 5 The Total power adf1I 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 ADAS User manual Chap9 10 17 March 20032. PECL p Aja Fey 9 10 3 Jk There are similar coefficients ne 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 WN intervals as AAO Ay Hi A Ag AN pis Ao HEFL Ay Ag IAN pip 0 N suppose that the j gt k spectrum line has a normalised emission profile j aa gil A In general such 1 Also pix pix a profile is a convolution of Doppler and instrumental functions Then the envelope feature photon emissivity coefficient vector is defined as Ais F PELON p2 PEGLE J P dA 9 10 4 Acero 1 A jox S 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 ton 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 PEELO O Y PEELE Af erfe A Aj 44 6 1 eao 9 10 5 erfc Aj Qs 0 1 2 jok KT on f m R m where O a and My is the emitting ion mass I my m ADAS User manual Chap9 10 17 March 2003 In actual spectral analysis involving compl
3. lbrdi numte numtion numth numaens numdion numwv1 amp END 1 800e 04 1 000E 11 home adas adas adf04 adas 6 mom97_ls c2 dat NULL NULL test_adf15_pec dat test_adf40_fpec dat test_adfll_plt dat test_adfll_plt_filter dat Cc 6 S50 386241 0 TRUE FALSE FALSE FALSE FALSE FALSE FALSE 040 FALSE FALSE FALSE FALSE w O a O O 4 500e 04 9 000e 04 1 800e 05 4 500e 05 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 ADAS User manual 1 A primary file either an adf04 for the ion whose spectral line and envelope emissivities are required or a driver file of format adf42 is required The driver file route maintains compatibility of operation of the interactive ADAS810 with the automatic offline mass production codes Data from the driver file fills the editable fields in on the following Processing window With an ADFO04 file selected these fields must be edited in Chap9 10 17 March 2003 Note that each type of data is stored according to its ADAS data format adf number Your personal data 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
4. 04 1 000E 04 1 0008 04 7 320E 03 2 1 000E 13 1 000E 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 0008 15 1 0008 15 5 5 000E 04 5 000E 04 5 000E 04 1 4605 04 i 5 1 000 16 1 000E 16 R P S ny Temperature Wits Kelvin Density mits cm 3 Edit Table Edit Table Default Standard Set Default Standard Set Metastable State Include Reactions Spectral Interval F Ionisation Rates max wave 10 00 90 00 100 00 200 00 3200 00 6500 00 Charge Exchange _ Recombination s Imer Shell Ionisation Ol al Include Projection Data Edit Table Proton Impact Collisions For a single metastable normalise PLT and PEC zeff 00000 NO Lower limit of A value 9 00000 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 The PEC adf15 file comprises the set of individual line emissivity coefficients ADAS User manual Chap9 10 17 March 2003 F Text Output Append i Replace File Name paper txt F PEC adf15 file Append J Replace File Nane jadas810_adf15 pass F Feature PEC adf40 file
5. 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 small sample testing and test result production prior to large scale execution It can use the same driver data file type ADF42 as the offline version but allows the user to modify some driver parameters ADAS810 includes the full population emissivity and radiated power calculation functionality of ADAS208 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 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 FEC s Following Chap 3 8 the emissivity of an individual line is specified as zt pus A LI FON N Ya FON N 9 10 1 This allows specification of ie excitation oton PEEN coefficient PECL EA aB 9 10 2 and the recombination photon emissivity coefficient
6. 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 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 A Standard file adf04 Driver File adf42 Central Data User Data 4 Edit Path Name A 2 Specific Ion File Details Bhomes saamnerss adasif adf Ode jelike helike_hpsl02he dat helike_hps02he_ti1_cropped dat helike_hps02he_t1 dat helike_hpsl02he dat ADAS User manual specific ion and optional expansion file names Br
7. ex 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 FEE 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 pu l can be totalled This total line power coefficient archived in the data class ADF11 subcategory PLF 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 by appropriate soft x ray and or bolometer filter transmission functions Such modification can not be done retrospectively on the unfiltered P In contrast the F PEC is suited to further processing which can include imposition of spectrometer instrument functions as well as filtering and integration over extended wavelength regions Such additional operations on F FEEC s are treated as separate from ADAS810 will be handled by a new code for 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 fil
8. g conventions of the mass production codes As ADAS810 is in essence a variant of the population code ADAS208 instead of direct selection of an ADF42 driver file the data set selected on the INPUT screen may be an ADF04 file As noted above the driver files for this application are of format ADF42 The planned organisation in central ADAS will be according to pathways adas adf42 iso_nucl lt element gt The primary parameter settings for operation of ADAS810 are contained in the driver which may 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 which include the input ADF04 file and then the output PEF PEE and F YEE files In interactive operation ADAS810 allows re specification of some parameters such as wavelength intervals temperatures etc on the processing screen and of output file routing on ADAS User manual Chap9 10 17 March 2003 the output screen over riding 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 dsn18 dsn35 dsnl5 dsn40 dsn11 dsn11f amp END amp ION element z0 z1 ip amp END amp META lnorm nmet imetr 1 amp END amp PROCESS liosel lhsel lrsel lisel lnsel lpsel zeff amp END amp OUTPUT lmetr ltscl ldscl
9. owse Coments Cancel Done Expansion and filter files Chap9 10 17 March 2003 central Data User Data 4 Edit Path Name 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 adf18 al7_p208 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 PEPePeeeeTereeereeeesereer eee ees eee sees rere er eer sere reer seer eee ee reer sees Expansion File Details Phones a an a am afier ab pebr lexp96 he exp96 he_heO1s dat expS6 he_c41s dat exp96 he_n5ls dat expS6 he_ne81s dat Filter File Details The processing options window has the appearance shown below 1 2 ADAS User manual 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 Chap9 10 17 March 2003 ADAS User manual the temperature display window The temperature values at which the excitation rate coefficients in fact upsilon
10. s 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 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 Personal preferred sets are allowed These should be stored in your lt uid gt adas defaults directory as adas810_te dat for temperature defaults and adas810_dens dat for density defaults Samples are illustrated below Low Te set 11 ev BW DN O 0 H N Selection of metastables is done from a scrollable button list rather than a pop up Wavelength ranges and associated pixels are specified in an editable table The set of control parameters for the calculation follows ADAS208 The Normalisation option should be chosen when there is only a single metastable Chap9 10 17 March 2003 adf04 file shome summers adas adf04 helike helike hpsl0Zhe dat Browse Comments 2 adf18 file home summers adas adf18 a1 _p208 Browse Comments Temperatures Densities XNDEX Electron Ion Neutral Input XNDEX Electron Ion Hydrogen Value Densities Densities _ 1 5 000 03 5 000 03 5 000 03 5 820E 03 1 1 000E 12 1 000E 12 2 1 000E
11. tered poe s and requires the initial creation of appropriate F FEE s via the present ADAS810 code In like manner FE E s can be produced provided the input data ADF04 supports this Note that for ease and consistency in modelling the same spectral intervals apply to both the F PEC s and the FEC s and to each of the metastable drivers if more than one Also the selection of the strong individual AEE 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 AEE viewed as a tabular function of T and N Note finally that F FEC s are tabulated as a function of selected wavelength range wavelength interval bin T and N with T T Program steps These are summarised in figure 9 10 Figure 9 10 select Choose Te Ne begin gt adf32_p810 amp wavelength yaar ra Read adf04 driver for an ranges or alter amp PEC gt specific ion ion defaults pec amp P output file ANE Calculate f_pec a and data files ec amp P lt population 9 end p ai structure It is noted again that the code is designed to allow single ion testing of AEE production The primary intent is nonetheless mass production and so the interactive code ADAS810 makes use of the driver data sets and file namin
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