Measurement of spin-exchange and relaxation parameters for polarizing Ne21 with K and Rb

Rajat K. Ghosh, Michael V. Romalis

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28 Scopus citations

Abstract

Hyperpolarized K-He3 comagnetometers have been used for tests of fundamental physics and inertial rotation sensing. These experiments will demonstrate increased sensitivity if the He3 buffer gas is replaced with Ne21. We measure the parameters necessary to realize implementation of an alkali-metal-Ne21 comagnetometer for two promising alkali-metal species, Rb and K. The spin-exchange rate constant for K with Ne21 and Rb with Ne21 are measured using two different methods. We also make the first measurement of the K-Ne21 contact spin interaction. Measurements for the Rb-Ne21 contact spin interaction, as well as the spin-destruction coefficients for Ne21 with both alkali-metal species are consistent with previous measurements. Additionally the quadrupolar spin-relaxation rate of Ne21 is measured. Finally, the feasibility of utilizing polarized Ne21 for operation in a comagnetometer is discussed.

Original languageEnglish (US)
Article number043415
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume81
Issue number4
DOIs
StatePublished - Apr 26 2010

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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