Theoretical investigation on hyperfine structure and isotope shift for 5d(10)6s( 2)S(1/2) -> 5d(9)6s(2) D-2(5/2) clock transition in Hg+

doi:10.7498/aps.68.20182136

	Theoretical investigation on hyperfine structure and isotope shift for 5d(10)6s( 2)S(1/2) -> 5d(9)6s(2) D-2(5/2) clock transition in Hg+
	Zhang Xiang 1; Lu Ben-Quan 2,3; Li Ji-Guang 2; Zou Hong-Xin 1
刊名	ACTA PHYSICA SINICA
	2019-02-20
卷号	68 期号:4 页码:7
关键词	hyperfine structure isotope shift multi-configuration Dirac-Hartree-Fock method mercury ion clock
ISSN号	1000-3290
DOI	10.7498/aps.68.20182136
英文摘要	The Dirac-Hartree-Fock approximation is adopted to calculate the mass shift and the field shift for the 5d(10)6s( 2)S(1/2) -> 5d(9)6s(2) D-2(5/2) clock transition in Hg+. It is found that the field shift is much larger than the mass shift so that the latter can be neglected in the isotope shift. In addition, we estimate that the isotope shifts of the levels related to the 5d(10)6s( 2)S(1/2) -> 5d(9)6s(2) D-2(5/2) clock transition of Hg+ is on the order of about 10(4) GHz, while the hyperfine structure splitting is in a range of 1-10 GHz. However, the isotope shift of the 5d(10)6s(2)S(1/2) -> 5d(9)6s(2) D-2(5/2) clock transition is on the same order of magnitude as the hyperfine structure splitting. Therefore, the hyperfine structure splitting must be taken into account for predicting the frequency shifts of the clock transition between different isotopes. On the basis of these results, we perform a multi-configuration DiracHartree-Fock calculation on the field shift of the 5d(10)6s(2)S(1/2) -> 5d(9)6s(2) D-2(5/2) clock transition in Hg+ and the hyperfine interaction constants of the upper and the lower levels involved. In order to give accurate theoretical results of these physical quantities, we systematically consider the main electron correlations in the atomic system by using the active space method. The restricted single and double (SrD) excitation method is used to capture the correlation between the 5d and the 6s valence electrons, and the correlation between the 3s, 3p, 3d, 4s, 4p, 4d, 5s, 5p, and 5d core and the valence electrons. The isotope shifts and hyperfine structure splitting for this transition of several stable mercury isotopes are given. In particular, the uncertainty of the calculated isotope shift between Hg-199(+) and Hg-198(+) is about 2%, compared with the experimental measurement available. Using these results, we predict the absolute frequency values of this transition for seven mercury isotopes, which provides theoretical reference data for experiments. Moreover, the calculated isotope shifts and hyperfine structures are also useful for studying the structure, property and nucleon interaction of mercury nucleus.
资助项目	National Natural Science Foundation of China[11604385] ; National Natural Science Foundation of China[91536106] ; National Natural Science Foundation of China[11204374] ; National Natural Science Foundation of China[11874090] ; Research Project of National University of Defense Technology, China[ZK17-03-11]
WOS关键词	MERCURY ION CLOCK ; PROGRAM ; REFORMULATION ; SPECTROSCOPY ; ENERGY ; TABLE ; STATE ; LASER
WOS研究方向	Physics
语种	英语
出版者	CHINESE PHYSICAL SOC
WOS记录号	WOS:000460121500012
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; Research Project of National University of Defense Technology, China ; Research Project of National University of Defense Technology, China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Research Project of National University of Defense Technology, China ; Research Project of National University of Defense Technology, China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Research Project of National University of Defense Technology, China ; Research Project of National University of Defense Technology, China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Research Project of National University of Defense Technology, China ; Research Project of National University of Defense Technology, China
内容类型	期刊论文
源URL	[http://210.72.145.45/handle/361003/11828]
专题	中国科学院国家授时中心
通讯作者	Li Ji-Guang; Zou Hong-Xin
作者单位	1.Natl Univ Def Technol, Coll Liberal Arts & Sci, Changsha 410073, Hunan, Peoples R China 2.Inst Appl Phys & Computat Math, Beijing 100088, Peoples R China 3.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Zhang Xiang,Lu Ben-Quan,Li Ji-Guang,et al. Theoretical investigation on hyperfine structure and isotope shift for 5d(10)6s( 2)S(1/2) -> 5d(9)6s(2) D-2(5/2) clock transition in Hg+[J]. ACTA PHYSICA SINICA,2019,68(4):7.
APA	Zhang Xiang,Lu Ben-Quan,Li Ji-Guang,&Zou Hong-Xin.(2019).Theoretical investigation on hyperfine structure and isotope shift for 5d(10)6s( 2)S(1/2) -> 5d(9)6s(2) D-2(5/2) clock transition in Hg+.ACTA PHYSICA SINICA,68(4),7.
MLA	Zhang Xiang,et al."Theoretical investigation on hyperfine structure and isotope shift for 5d(10)6s( 2)S(1/2) -> 5d(9)6s(2) D-2(5/2) clock transition in Hg+".ACTA PHYSICA SINICA 68.4(2019):7.