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Two-Orders-of-Magnitude Improvement in the Total Spin Angular Momentum of 131Xe Nuclei Using Spin Exchange Optical Pumping

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arxiv 2105.03076 v1 pith:IEJX3IDQ submitted 2021-05-07 physics.atom-ph nucl-ex

Michael J. Molway , Liana Bales-Shaffer , Kaili Ranta , Dustin Basler , Megan Murphy , Bryce E. Kidd , Abdulbasit Tobi Gafar , Justin Porter
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Kierstyn Albin Boyd M. Goodson Eduard Y. Chekmenev Matthew S. Rosen W. Michael Snow James Ball Eleanor Sparling Mia Prince Daniel Cocking Michael J. Barlow
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classification physics.atom-phnucl-ex
keywords spinangularimprovementneutron-131xeopticalpolarizationpumpingspin-exchange
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We report on hyperpolarization of quadrupolar (I=3/2) 131Xe via spin-exchange optical pumping. Observations of the 131Xe polarization dynamics show that the effective alkali-metal/131Xe spin-exchange cross-sections are large enough to compete with 131Xe spin relaxation. 131Xe polarization up to 7.6 p/m 1.5 percent was achieved in ca. 8.5EE20 spins--a ca. 100-fold improvement in the total spin angular momentum--enabling applications including measurement of spin-dependent neutron-131Xe s-wave scattering and sensitive searches for time-reversal violation in neutron-131Xe interactions beyond the Standard Model.

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