Application of the Variational R-matrix Method for the Dirac Equation to the Be Atom

• URL: http://arxiv.org/abs/2408.09329v1
• Date: Sun, 18 Aug 2024 02:02:31 GMT
• Title: Application of the Variational R-matrix Method for the Dirac Equation to the Be Atom
• Authors: Chris H. Greene, Miguel A. Alarcón,
• Abstract summary: This paper presents an implementation of the non-iterative eigenchannel R-matrix method for the Dirac equation. It includes a brief introduction, implementation details, and results for the photoionization cross-section of the beryllium atom.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: This paper presents an implementation of the non-iterative eigenchannel R-matrix method for the Dirac equation. It includes a brief introduction, implementation details, and results for the photoionization cross-section of the beryllium atom. Beryllium is a convenient test due to small but significant relativistic effects. The current calculation aligns with other R-matrix calculations and experiments. It observes the change in the Fano line shape of the (2pnd)1P series and, reveals a previously unnoticed coupling between triplet and singlet series observable in the ground state photoionization cross-section.

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