Journal article Open Access

Spin Transfer from an Optically Pumped Alkali Vapor to a Solid

Ishikawa, K.; Patton, B.; Jau, Y.-Y.; Happer, W.

We report enhancement of the spin polarization of Cs133 nuclei in CsH salt by spin transfer from an optically pumped cesium vapor. The nuclear polarization was 4.0 times the equilibrium polarization at 9.4 T and 137 °C, with larger enhancements at lower fields. This work is the first demonstration of spin transfer from a polarized alkali vapor to the nuclei of a solid, opening up new possibilities for research in hyperpolarized materials.

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