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Measurement of a129Xe transverse relaxation rate without the influence of Rb polarization-induced magnetic gradient

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Abstract

We demonstrate the measurement of the transverse spin relaxation rate of Xe without the influence of the Rb polarization-induced magnetic field gradient. The optical pumping beam and probe beam turn on and off repeatedly during the measurement to reduce the relaxation originating from the Rb polarization-induced magnetic field gradient. During the absence of the optical pumping beam, the nuclear spin of the noble gas atom does not experience the alkali-polarization-induced magnetic field gradient so that the transverse spin relaxation rate ($1/{T}_2$) decreases. When the duty cycle reaches zero, the measured transverse relaxation time ${T}_2$ approaches the longitudinal spin relaxation time ${T}_1$. Our method helps in roughly estimating the longitudinal spin relaxation time with a single measurement of the free induction decay.

© 2021 Optical Society of America

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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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