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

作　　者：Yan Lu Yueyang Zhai Yong Zhang Wenfeng Fan Li Xing Wei Quan 卢妍;翟跃阳;张勇;范文峰;邢力;全伟(School of Instrumentation Science and Opto-electronics Engineering,Beihang University,Beijing 100191,China;Research Institute of Frontier Science,Beihang University,Beijing 100191,China;Beijing Academy of Quantum Information Sciences,Beijing 100191,China;Beijing Advanced Innovation Center for Big Data-Based Precision Medicine,Beihang University,Beijing 100191,China)

机构地区：[1]School of Instrumentation Science and Opto-electronics Engineering,Beihang University,Beijing 100191,China [2]Research Institute of Frontier Science,Beihang University,Beijing 100191,China [3]Beijing Academy of Quantum Information Sciences,Beijing 100191,China [4]Beijing Advanced Innovation Center for Big Data-Based Precision Medicine,Beihang University,Beijing 100191,China

出　　处：《Chinese Physics B》2020年第4期258-266,共9页中国物理B（英文版）

基　　金：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);the National Science Fund for Distinguished Young Scholars of China(Grant No.61925301)。

摘　　要：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 spinexchange 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.

关 键 词：comagnetometer naturally abundant RB SPIN-EXCHANGE RELAXATION SPIN polarization 

分 类 号：TM936[电气工程—电力电子与电力传动]