Parametric CI+MBPT calculations of Th I energies and g-factors for even states

Savukov, I. M.

doi:10.1088/1361-6455/aa8017

Parametric CI+MBPT calculations of Th I energies and g-factors for even states

Journal Article · Fri Jul 28 00:00:00 EDT 2017 · Journal of Physics. B, Atomic, Molecular and Optical Physics

DOI:https://doi.org/10.1088/1361-6455/aa8017· OSTI ID:1458954

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Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

In this study, we study energies and g-factors for a large number of levels of Th I. We found that the accuracy of configuration-interaction many-body perturbation theory can be substantially improved by using multiple adjustment parameters, which are introduced to regulate the second-order MBPT corrections for single-valence energies and Coulomb interaction. The results for energies and g-factors are in excellent agreement with experiment, with accuracy sufficient to positively assign theoretical states of given angular momentum and parity to experimental levels. Finally, this theory will be further developed in the future to treat other, even more complicated, actinides such as U I.

Research Organization:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1458954

Alternate ID(s):: OSTI ID: 22656240

Report Number(s):: LA-UR--17-21886

Journal Information:: Journal of Physics. B, Atomic, Molecular and Optical Physics, Journal Name: Journal of Physics. B, Atomic, Molecular and Optical Physics Journal Issue: 16 Vol. 50; ISSN 0953-4075

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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Cited By (3)

Relativistic configuration-interaction calculations of U I hyperfine constants Savukov, Igor M. arXiv https://doi.org/10.48550/arxiv.2008.01675	text	January 2020
CI+MBPT calculations of Ar I energies, g factors, and transition line strengths Savukov, I. M. Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 51, Issue 6 https://doi.org/10.1088/1361-6455/aaac0d	journal	March 2018
Cowan Code: 50 Years of Growing Impact on Atomic Physics Kramida, Alexander Atoms, Vol. 7, Issue 3 https://doi.org/10.3390/atoms7030064	journal	July 2019