Spin-exchange relaxation of naturally abundant Rb in a K–Rb–<sup>21</sup>Ne self-compensated atomic comagnetometer

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

Lu Yan¹, Zhai Yueyang^{2, 3, 4}, Zhang Yong¹, Fan Wenfeng¹, Xing Li¹, Quan Wei^{2, 3, 4, †}

(a) Fitting result of the B^c ∼ K relationship; (b) comparison between theoretical and experimental results of the total relaxation rate Rtote of naturally abundant Rb: the blue triangles and purple diamonds are the Rtote measured by the traditional method and low frequency B_x modulation method, respectively, and the black line and red dashed line are calculated using the parameters obtained from fitting the B^c ∼ K relationship with the ⁸⁷Rb model and the previous approximation in Ref. [8], respectively; (c) Rb polarization.