Evaluation of second-order Zeeman frequency shift in NTSC-F2*

doi:10.1088/1674-1056/abe375

	Evaluation of second-order Zeeman frequency shift in NTSC-F2*
	Shi, Jun-Ru 1,2,3; Wang, Xin-Liang 1,2; Bai, Yang 1,2,3; Yang, Fan 1,2,3; Guan, Yong 1,2; Liu, Dan-Dan 1,2; Ruan, Jun 1,2; Zhang, Shou-Gang 1,2
刊名	CHINESE PHYSICS B
	2021-07-01
卷号	30 期号:7 页码:8
关键词	caesium atomic fountain clock second-order Zeeman frequency shift C-field magnetic shielding
ISSN号	1674-1056
DOI	10.1088/1674-1056/abe375
英文摘要	Caesium atomic fountain clock is a primary frequency standard, which realizes the duration of second. Its performance is mostly dominated by the frequency accuracy, and the C-field induced second-order Zeeman frequency shift is the major effect, which limits the accuracy improvement. By applying a high-precision current supply and high-performance magnetic shieldings, the C-field stability has been improved significantly. In order to achieve a uniform C-field, this paper proposes a doubly wound C-field solenoid, which compensates the radial magnetic field along the atomic flight region generated by the lead-out single wire and improves the accuracy evaluation of second-order Zeeman frequency shift. Based on the stable and uniform C-field, we launch the selected atoms to different heights and record the magnetically sensitive Ramsey transition \|F = 3, m(F) = -1 -> \|F = 4, m(F) = -1 central frequency, obtaining this frequency shift as 131.03 x 10(-15) and constructing the C-field profile (sigma = 0.15 nT). Meanwhile, during normal operation, we lock NTSC-F2 to the central frequency of the magnetically sensitive Ramsey transition \|F = 3, m(F) = -1 -> \|F = 4, m(F) = -1 fringe for ten consecutive days and record this frequency fluctuation in time domain. The first evaluation of second-order Zeeman frequency shift uncertainty is 0.10 x 10(-15). The total deviation of the frequency fluctuation on the clock transition induced by the C-field instability is less than 2.6 x 10(-17). Compared with NTSC-F1, NTSC-F2, there appears a significant improvement.
资助项目	National Key R&D Program of China[2016YFF0200202] ; Maintenance and Reformation Program for the Major Science and Technology Fundamental Devices of the Chinese Academy of Sciences[DSS-WXGZ-2020-0005] ; Foundation for Western Young Scholars, China[XAB2018A06]
WOS关键词	ACCURACY EVALUATION ; CESIUM FOUNTAIN ; STANDARD ; UNCERTAINTY
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000669092600001
资助机构	National Key R&D Program of China ; National Key R&D Program of China ; Maintenance and Reformation Program for the Major Science and Technology Fundamental Devices of the Chinese Academy of Sciences ; Maintenance and Reformation Program for the Major Science and Technology Fundamental Devices of the Chinese Academy of Sciences ; Foundation for Western Young Scholars, China ; Foundation for Western Young Scholars, China ; National Key R&D Program of China ; National Key R&D Program of China ; Maintenance and Reformation Program for the Major Science and Technology Fundamental Devices of the Chinese Academy of Sciences ; Maintenance and Reformation Program for the Major Science and Technology Fundamental Devices of the Chinese Academy of Sciences ; Foundation for Western Young Scholars, China ; Foundation for Western Young Scholars, China ; National Key R&D Program of China ; National Key R&D Program of China ; Maintenance and Reformation Program for the Major Science and Technology Fundamental Devices of the Chinese Academy of Sciences ; Maintenance and Reformation Program for the Major Science and Technology Fundamental Devices of the Chinese Academy of Sciences ; Foundation for Western Young Scholars, China ; Foundation for Western Young Scholars, China ; National Key R&D Program of China ; National Key R&D Program of China ; Maintenance and Reformation Program for the Major Science and Technology Fundamental Devices of the Chinese Academy of Sciences ; Maintenance and Reformation Program for the Major Science and Technology Fundamental Devices of the Chinese Academy of Sciences ; Foundation for Western Young Scholars, China ; Foundation for Western Young Scholars, China
内容类型	期刊论文
源URL	[http://210.72.145.45/handle/361003/10664]
专题	中国科学院国家授时中心
通讯作者	Wang, Xin-Liang
作者单位	1.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China 2.Chinese Acad Sci, Key Lab Time & Frequency Primary Stand, Xian 710600, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Shi, Jun-Ru,Wang, Xin-Liang,Bai, Yang,et al. Evaluation of second-order Zeeman frequency shift in NTSC-F2*[J]. CHINESE PHYSICS B,2021,30(7):8.
APA	Shi, Jun-Ru.,Wang, Xin-Liang.,Bai, Yang.,Yang, Fan.,Guan, Yong.,...&Zhang, Shou-Gang.(2021).Evaluation of second-order Zeeman frequency shift in NTSC-F2*.CHINESE PHYSICS B,30(7),8.
MLA	Shi, Jun-Ru,et al."Evaluation of second-order Zeeman frequency shift in NTSC-F2*".CHINESE PHYSICS B 30.7(2021):8.