High-precision determination of the frequency-shift enhancement factor in Rb-${}^{129}$Xe

Abstract

We report a measurement of the dimensionless enhancement factor ${\kappa }_0$ for the Rb-${}^{129}$Xe pair commonly used in spin exchange optical pumping (SEOP) to produce hyperpolarized ${}^{129}$Xe. ${\kappa }_0$ characterizes the amplification of the ${}^{129}$Xe magnetization contribution to the Rb electronic effective field, compared to the case of a uniform continuous medium in classical magnetostatics. The measurement is carried out in Rb vapor cells containing both ${}^3$He and ${}^{129}$Xe and relies on the previously measured value of ${\kappa }_0$ for the Rb-${}^3$He pair. The measurement is based on (1) the optically detected (Faraday rotation) frequency shift of the ${}^{87}$Rb EPR hyperfine spectrum caused by the SEOP nuclear polarization and subsequent sudden destruction of nuclear polarization of both species and (2) a comparison of NMR signals for the two species acquired just prior to the EPR frequency shift measurements. We find $({\kappa }_0{)}_{\mathrm{RbXe}}=518\pm 8$, in good agreement with previous measurements and theoretical estimates but with improved precision.

arXiv comment21 pages, 7 figures

References in corpus (7)

• Electric Dipole Moments of the Atoms, Molecules, Nuclei and Particles
• New limit on Lorentz and CPT violating neutron spin interactions using a free precession 3He-129Xe co-magnetometer
• Optically Polarized ${}^3$He
• Improved Limits on Spin-Mass Interactions
• ${}^3$He-${}^{129}$Xe Comagnetometery using ${}^{87}$Rb Detection and Decoupling
• Collisional ${}^3$He and ${}^{129}$Xe frequency shifts in Rb--noble-gas mixtures
• Synchronous Spin-Exchange Optical Pumping

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