A Detailed Configuration Accounting for the Hot Plasma Bound-Free Opacity Calculation
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arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866915448051728384 |
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| author | Nadezhkina, Alina Vronskiy, Mikhail |
| author_facet | Nadezhkina, Alina Vronskiy, Mikhail |
| contents | The calculation of the hot plasma bound-free opacity according to the average atom models often leads to a noticeable effect of initial configuration on the shell ionization threshold. For the related problem of taking into account the impact of configurations while calculating bound-bound opacity, G. Hazak and Y. Kurzweil developed a method within the Super Transition Arrays approach. Fourier transform method is the adaptation of their method for a Detailed Configurations Accounting. The bound--free opacity coefficient qualitative behavior makes it somewhat difficult to construct a direct analogue of Fourier transform method of Detailed Configurations Accounting for its calculation. We use the probabilistic reformulation of the method to obtain the expressions for the bound--free opacity coefficient that take into account the spread of ionization thresholds due to the shell occupation numbers fluctuations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_11815 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A Detailed Configuration Accounting for the Hot Plasma Bound-Free Opacity Calculation Nadezhkina, Alina Vronskiy, Mikhail Plasma Physics The calculation of the hot plasma bound-free opacity according to the average atom models often leads to a noticeable effect of initial configuration on the shell ionization threshold. For the related problem of taking into account the impact of configurations while calculating bound-bound opacity, G. Hazak and Y. Kurzweil developed a method within the Super Transition Arrays approach. Fourier transform method is the adaptation of their method for a Detailed Configurations Accounting. The bound--free opacity coefficient qualitative behavior makes it somewhat difficult to construct a direct analogue of Fourier transform method of Detailed Configurations Accounting for its calculation. We use the probabilistic reformulation of the method to obtain the expressions for the bound--free opacity coefficient that take into account the spread of ionization thresholds due to the shell occupation numbers fluctuations. |
| title | A Detailed Configuration Accounting for the Hot Plasma Bound-Free Opacity Calculation |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2508.11815 |