A new measurement of the permanent electric dipole moment of ¹²⁹Xe using ³He comagnetometry and SQUID detection

2019/02/07 by Sachdeva, N., Fan, I., Babcock, E. +18 · 1 citation
#Atomic Physics (physics.atom-ph) #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det)

paper · doi:10.48550/arxiv.1902.02864

Abstract

We describe a new technique to measure the EDM of ¹²⁹Xe with ³He comagnetometry. Both species are polarized using spin-exchange optical pumping, transferred to a measurement cell, and transported into a magnetically shielded room, where SQUID magnetometers detect free precession in applied electric and magnetic fields. The result of a one week run combined with a detailed study of systematic effects is d_A(¹²⁹Xe) = (0.26 ± 2.33_stat ± 0.72_syst)×10^-27~e cm. This corresponds to an upper limit of |d_A(¹²⁹Xe)| < 4.81× 10^-27 ~e cm~(95%~CL), a factor of 1.4 more sensitive than the previous limit.

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