Spin-exchange relaxation of naturally abundant Rb in a K-Rb-21Ne self-compensated atomic comagnetometer

doi:10.1088/1674-1056/ab75d3

Abstract The total effective spin-exchange relaxation of naturally abundant Rb in a K-Rb-²¹Ne comagnetometer is analyzed, and the results show that the coexistence of ⁸⁷Rb and ⁸⁵Rb isotopes in the same volume can lead to a large extra spin-exchange broadening compared to pure ⁸⁷Rb. This broadening mainly comes from the contribution of the equivalent reduction in the Rb spin-exchange rate. On this basis, an approximate relaxation model is proposed and experimentally demonstrated to be more accurate than that from a previous work. This study also provides a method for determining the properties of alkali-metal vapor cells.

Keywords: comagnetometer naturally abundant Rb spin-exchange relaxation spin polarization

Received: 24 December 2019
Revised: 28 January 2020
Accepted manuscript online:

PACS:	32.10.Dk	(Electric and magnetic moments, polarizabilities)
	32.10.Fn	(Fine and hyperfine structure)
	32.80.Xx	(Level crossing and optical pumping)

Fund: Project supported by the National Key R&D Program of China (Grant Nos. 2016YFB0501600 and 2017YFB0503100), the National Natural Science Foundation of China (Grant Nos. 61773043, 61673041, 61721091, and 61703025), and the National Science Fund for Distinguished Young Scholars of China (Grant No. 61925301).

Corresponding Authors: Wei Quan
E-mail: quanwei@buaa.edu.cn

Cite this article:

Yan Lu(卢妍), Yueyang Zhai(翟跃阳), Yong Zhang(张勇), Wenfeng Fan(范文峰), Li Xing(邢力), Wei Quan(全伟) Spin-exchange relaxation of naturally abundant Rb in a K-Rb-²¹Ne self-compensated atomic comagnetometer 2020 Chin. Phys. B 29 043204

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Spin-exchange relaxation of naturally abundant Rb in a K-Rb-21Ne self-compensated atomic comagnetometer

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Spin-exchange relaxation of naturally abundant Rb in a K-Rb-²¹Ne self-compensated atomic comagnetometer