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arXiv · 2307.04801

Metastability exchange optical pumping of $^3$He at low pressure and high magnetic field

X. Li·J. D. Maxwell·D. Nguyen·J. Brock·C. D. Keith·R. G. Milner·X. Wei
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Abstract

Systematic studies on metastability exchange optical pumping of $^3$He nuclei have been performed at Jefferson Lab using a 1-torr sealed cell at magnetic fields from 2 to 4 T. The effects of the discharge intensity, pump laser power, and pumping transition schemes on achievable nuclear polarization and pumping rate have been investigated. A maximum steady-state nuclear polarization of about 75% has been obtained. This work provides a baseline for the development of the novel polarized $^3$He target for CLAS12 at Jefferson Lab.

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X. Li, J. D. Maxwell, D. Nguyen, J. Brock, C. D. Keith, R. G. Milner, X. Wei. 2023-07-10. Metastability exchange optical pumping of $^3$He at low pressure and high magnetic field. https://doi.org/10.1016/j.nima.2023.168792

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