Jpn. J. Appl. Phys. 26 (1987) Supplement 26-3-1 pp. 215-216  |Previous Article| |Next Article|  |Table of Contents|
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Proc. 18th Int. Conf. Low Temperature Physics, Kyoto, 1987

Measurements on Polarized Liquid ³He at Very Low Temperatures

C. C. Kranenburg, S. A. J. Wiegers, G. A. Vermeulen, R. Jochemsen and G. Frossati

Moderately polarized liquid ³He at temperatures as low as 30 mK has been obtained using rapid melting of polarized solid. Viscosity measurements using a vibrating wire and measurements of the relaxation time constant T₁ at 300 MHz are presented. A sharp change in T₁ as a function of time has been observed, from a short T₁ at the beginning of the decompression to a rather long relaxation time afterwards. The effective temperature dependence of T₁ is given by T₁∼T^-1, while a T^-2 dependence is expected for intrinsic relaxation. Initial viscosity measurements indicate an in-crease in viscosity with increasing polarization, but this is subject to further confirmation.

URL: http://jjap.jsap.jp/link?JJAPS/26S3/215/