Method for deducing anisotropic spin-exchange rates

Abstract

Using measured spin-transfer rates from alkali atoms to He-3, combined with spin-relaxation rates of the alkali atoms due to He-3 and He-4, it should be possible to differentiate between isotropic and anisotropic spin-exchange. This would give a fundamental limit on the He-3 polarization attainable in spin-exchange optical pumping. For K-He, we find the limit to be 0.90+-0.11.

References in corpus (1)

• 3He Spin-Dependent Cross Sections and Sum Rules

Cited by in corpus (5)

• Optically Polarized ${}^3$He
• The Development of High-Performance Alkali-Hybrid Polarized ${}^3\mathrm{He}$ Targets for Electron Scattering
• Constraints on anomalous spin-spin interactions from spin-exchange collisions
• A fundamental limit to the efficiency of spin-exchange optical pumping of 3He nuclei
• Enhanced coupling of electron and nuclear spins by quantum tunneling resonances