Precision determination of an excited-state hyperfine splitting of cadmium ions

IF 3.5 2区 物理与天体物理 Q2 PHYSICS, APPLIED Applied Physics Letters Pub Date : 2025-03-13 DOI:10.1063/5.0261002
Y. Zheng, Y. M. Yu, Y. T. Chen, S. N. Miao, W. X. Shi, J. W. Zhang, L. J. Wang
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Abstract

Precision determination of the hyperfine splitting (HFS) of cadmium ions is useful to study space-time variation of fundamental physical constants and isotope shifts. In this work, we present the precision frequency measurement of the excited-state 2P3/2 hyperfine splitting of 111,113Cd+ ions using the laser-induced fluorescence technique. By introducing the technology of sympathetic cooling and measuring the doublet line transition exploitation of an optical comb system, the uncertainties are improved to 16 and 12 kHz, respectively, two orders of magnitude higher precision than the reported results from the linear transformation of isotope shifts. The magnetic dipole constants AP3/2 of 111Cd+ and 113Cd+ are estimated to be 395 939(8) and 411 275(6) kHz, respectively. The difference between the measured and theoretical hyperfine structure constants indicates that more physical effects are required to be considered in the theoretical calculation and provides critical data for the examination of deviation from King-plot linearity in isotope shifts.
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来源期刊
Applied Physics Letters
Applied Physics Letters 物理-物理:应用
CiteScore
6.40
自引率
10.00%
发文量
1821
审稿时长
1.6 months
期刊介绍: Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.
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