Numerical Investigation of Non-equilibrium Electron Effects on the Collisional Ionization Rate in the Collisional-Radiative Model
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arXiv
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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866914728192770048 |
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| author | Cho, M. S. Chung, H. -K. Foord, M. E. Libby, S. B. Cho, B. I. |
| author_facet | Cho, M. S. Chung, H. -K. Foord, M. E. Libby, S. B. Cho, B. I. |
| contents | The interplay of kinetic electron physics and atomic processes in ultrashort laser-plasma interactions provides a comprehensive understanding of electron energy distribution's impact on plasma properties. Notably, non-equilibrium electrons play a vital role in collisional ionization, influencing ionization degrees and spectra. This paper introduces a computational model that integrates the physics of kinetic electrons and atomic processes, utilizing a Boltzmann equation for non-equilibrium electrons and a collisional-radiative model for atomic state populations. The model is used to investigate the influence of non-equilibrium electrons on collisional ionization rates and their effect on population distribution, as demonstrated by L. Young et al. (Nature, 2010). The study reveals significant non-equilibrium electron presence during XFEL-matter interactions, profoundly affecting collisional ionization rates in the gas plasma, thereby necessitating careful consideration of the Collisional-Radiative (CR) model applied to such systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_00969 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Numerical Investigation of Non-equilibrium Electron Effects on the Collisional Ionization Rate in the Collisional-Radiative Model Cho, M. S. Chung, H. -K. Foord, M. E. Libby, S. B. Cho, B. I. Plasma Physics Atomic Physics The interplay of kinetic electron physics and atomic processes in ultrashort laser-plasma interactions provides a comprehensive understanding of electron energy distribution's impact on plasma properties. Notably, non-equilibrium electrons play a vital role in collisional ionization, influencing ionization degrees and spectra. This paper introduces a computational model that integrates the physics of kinetic electrons and atomic processes, utilizing a Boltzmann equation for non-equilibrium electrons and a collisional-radiative model for atomic state populations. The model is used to investigate the influence of non-equilibrium electrons on collisional ionization rates and their effect on population distribution, as demonstrated by L. Young et al. (Nature, 2010). The study reveals significant non-equilibrium electron presence during XFEL-matter interactions, profoundly affecting collisional ionization rates in the gas plasma, thereby necessitating careful consideration of the Collisional-Radiative (CR) model applied to such systems. |
| title | Numerical Investigation of Non-equilibrium Electron Effects on the Collisional Ionization Rate in the Collisional-Radiative Model |
| topic | Plasma Physics Atomic Physics |
| url | https://arxiv.org/abs/2312.00969 |