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Wall relaxation of 3He in spin-exchange cells.

作者信息

Jacob R E, Morgan S W, Saam B, Leawoods J C

机构信息

Department of Physics, University of Utah, 115 South 1400 East, Salt Lake City, Utah 84112-0830, USA.

出版信息

Phys Rev Lett. 2001 Oct 1;87(14):143004. doi: 10.1103/PhysRevLett.87.143004. Epub 2001 Sep 17.

DOI:10.1103/PhysRevLett.87.143004
PMID:11580650
Abstract

The 3He longitudinal spin-relaxation rate T1-1 is crucial for production of highly polarized 3He by spin-exchange optical pumping. We show that T1-1 is increased by a factor of 2-20 solely by exposure of spin-exchange cells to a few-kG magnetic field. The original T1-1 can be restored by degaussing the cell. The effect is attributed to magnetic surface sites and has been observed in both Pyrex and aluminosilicate-glass cells. Our results both advance the understanding of wall relaxation and demonstrate the use of 3He as an extremely sensitive probe of surface magnetism.

摘要

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