当前位置: X-MOL 学术J. Phys. B: At. Mol. Opt. Phys. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Relativistic coupled-cluster calculation of hyperfine-structure constants of La2+
Journal of Physics B: Atomic, Molecular and Optical Physics ( IF 1.5 ) Pub Date : 2021-04-06 , DOI: 10.1088/1361-6455/abcdf0
Fang Li 1 , Hong Ma 1 , Yong-Bo Tang 2
Affiliation  

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 etal 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.



中文翻译:

La2+超精细结构常数的相对论耦合簇计算

使用单双打近似相对论耦合簇方法,我们计算超精细结构常数的镧24低洼状态2+。将最低的四个状态 5 d 3/2,5/2和 4 f 5/2,7/2 的结果与最近的测量值进行比较(Olmschenk等人2017 Phys. Rev. A 96 032502)。合理的协议被发现为超精细结构常数5的d 3/2和4 ˚F 5 / 2,7 / 2的状态,但超精细结构常数5的d 5/2和超精细结构常数B有很大的偏差。为了理解电子相关效应的作用,还介绍了低阶多体微扰理论的中间结果和线性版本的单近似和双近似耦合簇。在耦合聚类理论的框架内,还研究了个体相关效应的贡献趋势。

更新日期:2021-04-06
down
wechat
bug