Spin diffusion coefficient of normal liquid 3He in infinite and bounded geometries under pressure

We report measurements of the spin diffusion coefficients of normal liquid 3He in bulk, and in 5μm diameter glass capillary tubes, as a function of pressure (0–30 bar) and temperature (3mK–15mK). The bulk experiments are well into the limiting low temperature Fermi fluid regime, and provide the firs...

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Bibliographic Details
Published in:Physica B + C 1981-08, Vol.108 (1), p.1059-1060
Main Authors: Brewer, D.F., Betts, D.S., Sachrajda, A., Truscott, W.S.
Format: Article
Language:English
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Summary:We report measurements of the spin diffusion coefficients of normal liquid 3He in bulk, and in 5μm diameter glass capillary tubes, as a function of pressure (0–30 bar) and temperature (3mK–15mK). The bulk experiments are well into the limiting low temperature Fermi fluid regime, and provide the first reliable measurements of the pressure variation of A = DT 2. In the 5μm capillaries, deviations from this relation are found as the quasiparticle mean free path become comparable with the diameter. The results indicate that the spin momentum accommodation coefficient at this surface is less than unity.
ISSN:0378-4363
DOI:10.1016/0378-4363(81)90833-0