Abstract
Abstract
Using the singles and doubles approximated relativistic coupled-cluster method, we calculate hyperfine-structure constant A and B of 24 low-lying states of La2+. The results of the lowest four states 5d
3/2,5/2 and 4f
5/2,7/2 are compared with recently measured values (Olmschenk et al 2017 Phys. Rev. A
96 032502). Reasonable agreement is found for hyperfine-structure constant A of 5d
3/2 and 4f
5/2,7/2 states, but the hyperfine-structure constant A of 5d
5/2 and the hyperfine-structure constant B have a large deviation. To understand the role of the electron correlation effect, the intermediate results from lower-order many-body perturbation-theory and the linear version of coupled-cluster with single and double approximation are also presented. In the framework of coupled-cluster theory, the contribution trends from individual correlation effects are also investigated.
Funder
the Post-doctoral research project of SZTU
the National Natural Science Foundation of China
Subject
Condensed Matter Physics,Atomic and Molecular Physics, and Optics
Cited by
5 articles.
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