期刊
PHYSICAL REVIEW A
卷 91, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.91.032516
关键词
-
资金
- FAPESP [2014/02939-5]
The current standard nuclear quadrupole moments (NQMs) of the K-39, K-40, and K-41 isotopes have recently been contested by Singh and co-workers on the basis of their atomic computational data. Thus we performed relativistic calculations of electric field gradients at the potassium nuclei in three diatomic molecules (KF, KCl, and KBr) and combined these values with accurate experimental nuclear quadrupole coupling constants to provide an independent assessment of these NQMs. Our most accurate results, obtained by treating electron correlation with coupled cluster theory, employing a four-component Hamiltonian that includes the Gaunt two-electron correction, and with an incremented relativistic basis set of quadruple-zeta quality, yield Q(K-39) = 60.3(6), Q(K-40) = -75.0(8), and Q(K-41) = 73.4(7) mb. These values are in better agreement with the results obtained by Singh et al. and indicate that the standard NQMs should be revised.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据