Recent Advances In Polarized He-3 Targets

Jaideep Singh,Peter Dolph,Karen Mooney,Vladimir Nelyubin, Al Tobias,Aidan Kelleher, Todd Averettt,Gordon Cates

SPIN PHYSICS: 18th International Spin Physics Symposium（2009）

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摘要

Recently there have been many important advances made in spin-exchange optical-pumping (SEOP) polarized He-3 targets. Use of hybrid K-Rb SEOP achieved He-3 polarizations near 50% in-beam during the recent JLab G(E)(n) experiment (1302013). Combining well-optimized alkali-hybrid SEOP with high-power spectrally-narrowed laser diode arrays increases He-3 polarizations to 70%. We describe how these technologies work and why they improve target polarization.

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关键词

laser-polarized helium-3 targets for electron scattering,alkali-hybrid spin-exchange optical pumping,spectrally-narrowed laser diode arrays,hybrid potassium-rubidium (K-Rb) SEOP

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