Relaxation pathways in X-ray Free Electron Laser heated Iron
Fuente:
arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866912207383560192 |
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| author | Ansia, Lucas Velarde, Pedro Fajardo, Marta Williams, Gareth |
| author_facet | Ansia, Lucas Velarde, Pedro Fajardo, Marta Williams, Gareth |
| contents | Non-thermal photo-ionized plasmas are now established in the laboratory, and require models that treat the atomic processes and electron distribution self-consistently. We investigate the effects of inelastic thermalization in iron under intense X-ray irradiation using the atomic model BigBarT, suited for the self-consistent evolution of the electron continuum, including degeneracy effects. Our study focuses particularly on collisional $M$-shell ionization, which we identify as the dominant relaxation process of the non-thermal electrons. We show that $M$-shell satellite intensities are sensitive to non-thermal ionization, providing a potential method to refine collisional cross sections that are otherwise difficult to compute due to their proximity to the continuum and the associated plasma screening effects. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_17000 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Relaxation pathways in X-ray Free Electron Laser heated Iron Ansia, Lucas Velarde, Pedro Fajardo, Marta Williams, Gareth Plasma Physics Non-thermal photo-ionized plasmas are now established in the laboratory, and require models that treat the atomic processes and electron distribution self-consistently. We investigate the effects of inelastic thermalization in iron under intense X-ray irradiation using the atomic model BigBarT, suited for the self-consistent evolution of the electron continuum, including degeneracy effects. Our study focuses particularly on collisional $M$-shell ionization, which we identify as the dominant relaxation process of the non-thermal electrons. We show that $M$-shell satellite intensities are sensitive to non-thermal ionization, providing a potential method to refine collisional cross sections that are otherwise difficult to compute due to their proximity to the continuum and the associated plasma screening effects. |
| title | Relaxation pathways in X-ray Free Electron Laser heated Iron |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2501.17000 |