Ionization balance of non-LTE plasmas from an average-atom collisional-radiative model
We present a simplified version of an average-atom collisional-radiative model employing both local-thermodynamic-equilibrium average-atom and isolated-ion atomic data. The simplifications introduced do not lead to any substantial errors, and they significantly speed up calculations compared with th...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2022-11-01
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| Series: | Matter and Radiation at Extremes |
| Online Access: | http://dx.doi.org/10.1063/5.0098814 |
| _version_ | 1797947371807571968 |
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| author | A. A. Ovechkin P. A. Loboda A. S. Korolev S. V. Kolchugin I. Yu. Vichev A. D. Solomyannaya D. A. Kim A. S. Grushin |
| author_facet | A. A. Ovechkin P. A. Loboda A. S. Korolev S. V. Kolchugin I. Yu. Vichev A. D. Solomyannaya D. A. Kim A. S. Grushin |
| author_sort | A. A. Ovechkin |
| collection | DOAJ |
| description | We present a simplified version of an average-atom collisional-radiative model employing both local-thermodynamic-equilibrium average-atom and isolated-ion atomic data. The simplifications introduced do not lead to any substantial errors, and they significantly speed up calculations compared with the basic average-atom model involving direct solution of the self-consistent-field equations. Average ion charges, charge state distributions, and emission spectra of non-local-thermodynamic-equilibrium (NLTE) gold plasmas calculated using various modifications of the average-atom collisional-radiative model are compared with those obtained using the THERMOS model with the detailed configuration accounting approach. We also propose an efficient method to calculate thermodynamic functions of NLTE plasmas in the context of the simplified average-atom collisional-radiative model. |
| first_indexed | 2024-04-10T21:25:41Z |
| format | Article |
| id | doaj.art-0a3b7ad24e1b435b9e8ce229a09a63a7 |
| institution | Directory Open Access Journal |
| issn | 2468-080X |
| language | English |
| last_indexed | 2024-04-10T21:25:41Z |
| publishDate | 2022-11-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | Matter and Radiation at Extremes |
| spelling | doaj.art-0a3b7ad24e1b435b9e8ce229a09a63a72023-01-19T16:30:27ZengAIP Publishing LLCMatter and Radiation at Extremes2468-080X2022-11-0176064401064401-1610.1063/5.0098814Ionization balance of non-LTE plasmas from an average-atom collisional-radiative modelA. A. Ovechkin0P. A. Loboda1A. S. Korolev2S. V. Kolchugin3I. Yu. Vichev4A. D. Solomyannaya5D. A. Kim6A. S. Grushin7Russian Federal Nuclear Center, Zababakhin All-Russian Research Institute of Technical Physics (RFNC-VNIITF), Chelyabinsk Region, Snezhinsk, RussiaRussian Federal Nuclear Center, Zababakhin All-Russian Research Institute of Technical Physics (RFNC-VNIITF), Chelyabinsk Region, Snezhinsk, RussiaRussian Federal Nuclear Center, Zababakhin All-Russian Research Institute of Technical Physics (RFNC-VNIITF), Chelyabinsk Region, Snezhinsk, RussiaRussian Federal Nuclear Center, Zababakhin All-Russian Research Institute of Technical Physics (RFNC-VNIITF), Chelyabinsk Region, Snezhinsk, RussiaKeldysh Institute of Applied Mathematics RAS, Moscow, RussiaKeldysh Institute of Applied Mathematics RAS, Moscow, RussiaMoscow Engineering Physics Institute (MEPhI), National Research Nuclear University, Moscow, RussiaKeldysh Institute of Applied Mathematics RAS, Moscow, RussiaWe present a simplified version of an average-atom collisional-radiative model employing both local-thermodynamic-equilibrium average-atom and isolated-ion atomic data. The simplifications introduced do not lead to any substantial errors, and they significantly speed up calculations compared with the basic average-atom model involving direct solution of the self-consistent-field equations. Average ion charges, charge state distributions, and emission spectra of non-local-thermodynamic-equilibrium (NLTE) gold plasmas calculated using various modifications of the average-atom collisional-radiative model are compared with those obtained using the THERMOS model with the detailed configuration accounting approach. We also propose an efficient method to calculate thermodynamic functions of NLTE plasmas in the context of the simplified average-atom collisional-radiative model.http://dx.doi.org/10.1063/5.0098814 |
| spellingShingle | A. A. Ovechkin P. A. Loboda A. S. Korolev S. V. Kolchugin I. Yu. Vichev A. D. Solomyannaya D. A. Kim A. S. Grushin Ionization balance of non-LTE plasmas from an average-atom collisional-radiative model Matter and Radiation at Extremes |
| title | Ionization balance of non-LTE plasmas from an average-atom collisional-radiative model |
| title_full | Ionization balance of non-LTE plasmas from an average-atom collisional-radiative model |
| title_fullStr | Ionization balance of non-LTE plasmas from an average-atom collisional-radiative model |
| title_full_unstemmed | Ionization balance of non-LTE plasmas from an average-atom collisional-radiative model |
| title_short | Ionization balance of non-LTE plasmas from an average-atom collisional-radiative model |
| title_sort | ionization balance of non lte plasmas from an average atom collisional radiative model |
| url | http://dx.doi.org/10.1063/5.0098814 |
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