Nuclear polarization of /sup 3/He gas at and below 4. 2 K by room temperature laser optical pumping
Journal Article
·
· AIP Conf. Proc.; (United States)
Ground state nuclear polarizations up to 50% have been produced in /sup 3/He gas at liquid helium temperatures and number densities of order 10/sup 18/ cm/sup -3/ by a polarization transfer technique. /sup 3/He gas in a room temperature pyrex cell is optically pumped by light from a color center laser. Polarized ground state atoms diffuse to a second cell immersed in a liquid helium bath. That part of the double cell interior surface near liquid helium temperatures is coated with frozen molecular hydrogen. Under good conditions over 90% of the polarization in the pumping cell is transferred to the cold cell.
- Research Organization:
- Laboratoire de Spectroscopie Hertzienne de l'E.N.S., 24, rue Lhomond, 75231 Paris Cedex 05, France
- OSTI ID:
- 5611687
- Report Number(s):
- CONF-830591-
- Journal Information:
- AIP Conf. Proc.; (United States), Vol. 117:1; Conference: Polarized ion workshop, Vancouver, Canada, 23 May 1983
- Country of Publication:
- United States
- Language:
- English
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