https://doi.org/10.1140/epjp/s13360-025-06678-2
Regular Article
Theoretical determination of the electronic structures and photoelectron angular distributions after atomic photoionization in finite temperature dense plasmas
School of Science, Hunan University of Technology, 412007, Zhuzhou, People’s Republic of China
a
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Received:
9
May
2025
Accepted:
21
July
2025
Published online:
21
August
2025
We present a theoretical study on atomic structure of Si XIV ions as well as on their radiative decay properties and photoionization process in the environment of finite temperature dense plasmas. To this end, the relativistic configuration interaction method incorporates the effective potential between electrons and particles proposed by Stanton and Murillo (Phys Rev E 91:033104, 2015), which including plasma degeneracy, electron exchange correlation, and finite temperature gradient correction has been implemented. The distorted wave method within the relativistic Dirac–Coulomb scheme is used to calculate the photoionization process. The key characteristic of the method is that the effective potential replaces the traditional electron–nucleus Coulomb potential to include the plasma background. It is used to solve the modified Dirac equation so as to get the bound and continuum electron wave functions. Detailed investigations are conducted on the variation in level energies, transition rates, ionization energies, photoionization cross sections, and photoelectron angular distributions across a wide range of plasma parameters. Our results show good comparison to other available experimental and theoretical data. We hope the present study is beneficial to fusion, astrophysics and other fields, and the results of this study have applications in the estimation of the radiative opacity of stellar plasma, inertial confinement fusion plasma, X-pinch experiments, etc.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
