Photoionization of Atomic Systems Using the Random-Phase Approximation Including Relativistic Interactions

Deshmukh, Pranawa C. (ORCID:0000000330682439); Manson, Steven T. (ORCID:0000000270724122)

doi:10.3390/atoms10030071

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Photoionization of Atomic Systems Using the Random-Phase Approximation Including Relativistic Interactions

Deshmukh, Pranawa C. (ORCID:0000000330682439)·Manson, Steven T. (ORCID:0000000270724122)

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Abstract

Approximation methods are unavoidable in solving a many-electron problem. One of the most successful approximations is the random-phase approximation (RPA). Miron Amusia showed that it can be used successfully to describe atomic photoionization processes of many-electron atomic systems. In this article, the historical reasons behind the term “random-phase approximation” are revisited. A brief introduction to the relativistic RPA (RRPA) developed by Walter Johnson and colleagues is provided and some of its illustrative applications are presented.

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74 ATOMIC AND MOLECULAR PHYSICS Hartree-Fock photoionization random phase approximation relativistic interactions

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Deshmukh, Pranawa C. (ORCID:0000000330682439), Manson, Steven T. (ORCID:0000000270724122). 2022-07-11. Photoionization of Atomic Systems Using the Random-Phase Approximation Including Relativistic Interactions. https://doi.org/10.3390/atoms10030071

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