Finite-field calculation of electric quadrupole moments of P-2(3/2), D-2(3/2,5/2), and F-2(5/2,7/2) states for Yb+ ion
Finite-field calculation of electric quadrupole moments of P-2(3/2), D-2(3/2,5/2), and F-2(5/2,7/2) states for Yb+ ion
复制标题
Yb离子P-2(3/2)、D-2(3/2,5/2)、F-2(5/2,7/2)态电四极矩的有限场计算
DOI：
10.1088/1674-1056/ab821c
复制
发表时间：
2020
影响因子：
1.7
通讯作者：
Suo Bing-Bing
中科院分区：
文献类型：
--
作者：
Guo Xi-Tong;Yu Yan-Mei;Liu Yong;Suo Bing-Bing
Yb+ 低激发态的电四极矩通过相对论耦合团簇理论和外部场的扰动来计算。场相关能量微分提供了 2 P 3/2、2 D 3/2、5/2 和 2 F 5/2、7/2 态的电四极矩的准确值，与实验值非常吻合。研究了电子相关性对电四极矩的重要作用。我们的计算表明，Yb+(2 F 7/2) 态的电四极矩存在早期争议，测量值与理论值存在较大差异。这些电四极矩值可以帮助我们确定 Yb+ 离子的最先进实验中的电四极杆位移。
Electric quadrupole moments of low-lying excited states of Yb+ are calculated by relativistic coupled-cluster theory with perturbations from external fields. The field-dependent energy differentiation provides accurate values of the electric quadrupole moments of 2 P 3/2, 2 D 3/2, 5/2, and 2 F 5/2, 7/2 states which agree well with experimental values. The important role of the electronic correlation to the electric quadrupole moments is investigated. Our calculations indicate the early dispute of the electric quadrupole moment of the Yb+(2 F 7/2) state for which the measured and theoretical values have a large discrepancy. These electric quadrupole moment values can help us to determine the electric quadrupole shifts in start-of-the-art experiments of the Yb+ ion.