H-β Line in a Corona Helium Plasma: A Multi-Code Line Shape Comparison
Many spectroscopic diagnostics are routinely used as techniques to infer the plasma parameters from line emission spectra, but their accuracy depends on the numerical model or code used for the fitting process. However, the validation of a line shape code requires some steps: the comparison of the l...
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MDPI AG
2018-05-01
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| Online Access: | http://www.mdpi.com/2218-2004/6/2/29 |
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| author | Roshin Raj Sheeba Mohammed Koubiti Nelly Bonifaci Franck Gilleron Caroline Mossé Jean-Christophe Pain Joël Rosato Evgeny Stambulchik |
| author_facet | Roshin Raj Sheeba Mohammed Koubiti Nelly Bonifaci Franck Gilleron Caroline Mossé Jean-Christophe Pain Joël Rosato Evgeny Stambulchik |
| author_sort | Roshin Raj Sheeba |
| collection | DOAJ |
| description | Many spectroscopic diagnostics are routinely used as techniques to infer the plasma parameters from line emission spectra, but their accuracy depends on the numerical model or code used for the fitting process. However, the validation of a line shape code requires some steps: the comparison of the line shape code with other similar codes for some academic (simple) cases and then for more complex ones, the comparison of the fitting parameters obtained from the best fit of the experimental spectra with those obtained with other diagnostic techniques, and/or the comparison of the fitting parameters obtained by different codes to fit the same experimental data. Here we compare the profiles of the hydrogen Balmer β line in helium plasma computed by five codes for a selected set of plasma parameters and we report on the plasma parameters inferred by each of them from the fitting to a number of experimental spectra measured in a helium corona discharge where the pressure was in the range of 1–5 bars. |
| first_indexed | 2024-12-17T10:54:00Z |
| format | Article |
| id | doaj.art-faaef22242f645809a5367d97aaaf0b6 |
| institution | Directory Open Access Journal |
| issn | 2218-2004 |
| language | English |
| last_indexed | 2024-12-17T10:54:00Z |
| publishDate | 2018-05-01 |
| publisher | MDPI AG |
| record_format | Article |
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| spelling | doaj.art-faaef22242f645809a5367d97aaaf0b62022-12-21T21:51:54ZengMDPI AGAtoms2218-20042018-05-01622910.3390/atoms6020029atoms6020029H-β Line in a Corona Helium Plasma: A Multi-Code Line Shape ComparisonRoshin Raj Sheeba0Mohammed Koubiti1Nelly Bonifaci2Franck Gilleron3Caroline Mossé4Jean-Christophe Pain5Joël Rosato6Evgeny Stambulchik7Aix Marseille Univ., CNRS, PIIM, F-13397 Marseille CEDEX 20, FranceAix Marseille Univ., CNRS, PIIM, F-13397 Marseille CEDEX 20, FranceUniv. Grenoble Alpes, CNRS, Grenoble INP, G2Elab, 38000 Grenoble, FranceCommissariat à l’Energie Atomique (CEA) DAM, DIF, F-91297 Arpajon, FranceAix Marseille Univ., CNRS, PIIM, F-13397 Marseille CEDEX 20, FranceCommissariat à l’Energie Atomique (CEA) DAM, DIF, F-91297 Arpajon, FranceAix Marseille Univ., CNRS, PIIM, F-13397 Marseille CEDEX 20, FranceFaculty of Physics, Weizmann Institute of Science, Rehovot 7610001, IsraelMany spectroscopic diagnostics are routinely used as techniques to infer the plasma parameters from line emission spectra, but their accuracy depends on the numerical model or code used for the fitting process. However, the validation of a line shape code requires some steps: the comparison of the line shape code with other similar codes for some academic (simple) cases and then for more complex ones, the comparison of the fitting parameters obtained from the best fit of the experimental spectra with those obtained with other diagnostic techniques, and/or the comparison of the fitting parameters obtained by different codes to fit the same experimental data. Here we compare the profiles of the hydrogen Balmer β line in helium plasma computed by five codes for a selected set of plasma parameters and we report on the plasma parameters inferred by each of them from the fitting to a number of experimental spectra measured in a helium corona discharge where the pressure was in the range of 1–5 bars.http://www.mdpi.com/2218-2004/6/2/29Stark broadeningvan der Waals broadeningline shapeshelium plasmacorona dischargeplasma diagnosticscode comparisonneutral broadeningpressure broadening |
| spellingShingle | Roshin Raj Sheeba Mohammed Koubiti Nelly Bonifaci Franck Gilleron Caroline Mossé Jean-Christophe Pain Joël Rosato Evgeny Stambulchik H-β Line in a Corona Helium Plasma: A Multi-Code Line Shape Comparison Atoms Stark broadening van der Waals broadening line shapes helium plasma corona discharge plasma diagnostics code comparison neutral broadening pressure broadening |
| title | H-β Line in a Corona Helium Plasma: A Multi-Code Line Shape Comparison |
| title_full | H-β Line in a Corona Helium Plasma: A Multi-Code Line Shape Comparison |
| title_fullStr | H-β Line in a Corona Helium Plasma: A Multi-Code Line Shape Comparison |
| title_full_unstemmed | H-β Line in a Corona Helium Plasma: A Multi-Code Line Shape Comparison |
| title_short | H-β Line in a Corona Helium Plasma: A Multi-Code Line Shape Comparison |
| title_sort | h β line in a corona helium plasma a multi code line shape comparison |
| topic | Stark broadening van der Waals broadening line shapes helium plasma corona discharge plasma diagnostics code comparison neutral broadening pressure broadening |
| url | http://www.mdpi.com/2218-2004/6/2/29 |
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