Relativistic configuration interaction plus linearized-coupled-cluster calculations of U2+ energies, g factors, transition rates, and lifetimes

Savukov, Igor Mykhaylovich; Safronova, U. I.; Safronova, M. S.

doi:10.1103/PhysRevA.92.052516

Title: Relativistic configuration interaction plus linearized-coupled-cluster calculations of $U^{2 +}$ energies, $g$ factors, transition rates, and lifetimes

Journal Article · Mon Nov 23 00:00:00 EST 2015 · Physical Review A - Atomic, Molecular, and Optical Physics

DOI:https://doi.org/10.1103/PhysRevA.92.052516· OSTI ID:1457249

^[1]; Safronova, U. I. ^[2]; Safronova, M. S. ^[3]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Univ. of Nevada, Reno, NV (United States)
Univ. of Delaware, Newark, DE (United States); Univ. of Maryland, College Park, MD (United States)

In this study, excitation energies, term designations, g factors, transition rates, and lifetimes of U²⁺ are determined using a relativistic configuration interaction (CI) + linearized-coupled-cluster (LCC) approach. The CI-LCC energies are compared with CI + many-body-perturbation-theory (MBPT) and available experimental energies. Close agreement has been found with experiment, within hundreds of cm^-1. In addition, lifetimes of higher levels have been calculated for comparison with three experimentally measured lifetimes, and close agreement has been found within the experimental error. CI-LCC calculations constitute a benchmark test of the CI + all-order method in complex relativistic systems such as actinides and their ions with many valence electrons. The theory yields many energy levels, g factors, transition rates, and lifetimes of U²⁺ that are not available from experiment. Lastly, the theory can be applied to other multivalence atoms and ions, which would be of interest to many applications.

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

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1457249

Alternate ID(s):: OSTI ID: 1226863

Report Number(s):: LA-UR-15-25008; PLRAAN; TRN: US1901332

Journal Information:: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 92, Issue 5; ISSN 1050-2947

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 4 works

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Relativistic all-order many-body calculation of energies, wavelengths, and $M 1$ and $E 2$ transition rates for the $3 d^{n}$ configurations in tungsten ions Safronova, M. S.; Safronova, U. I.; Porsev, S. G. Physical Review A, Vol. 97, Issue 1 https://doi.org/10.1103/physreva.97.012502	journal	January 2018

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U III
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Title: Relativistic configuration interaction plus linearized-coupled-cluster calculations of U 2 + energies, g factors, transition rates, and lifetimes

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Title: Relativistic configuration interaction plus linearized-coupled-cluster calculations of $U^{2 +}$ energies, $g$ factors, transition rates, and lifetimes