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Magnetic relaxation in superfluid 3HeB

✍ Scribed by A.S. Borovik-Romanov; Yu.M. Bunkov; A. deWaard; V.V. Dmitriev; A.V. Markelov; Yu.M. Mukharskiy; D. Einzel

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
239 KB
Volume
165-166
Category
Article
ISSN
0921-4526

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✦ Synopsis

We present new experimental and theoretical studies of magnetic relaxation in 'He-B. Methods are developed for the measurement of relaxation using either CW or Pulsed NMR. Both methods make use of the properties of the Homogeneously Precessing Domain. Terms corresponding to intrinsic (Leggett-Takagi), spin diffusion and surface relaxation a distinguished. Theoretical results for the spin diffusion coeficient and the Leggett-Tskagi relaxation time, which display nonhydrodynamic anomalies, are compared with experiment.

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We are measuring the boundary between the superfluid A and B phases of 3He as a function of magnetic field and pressure. The results yield new information on Landau-Ginzburg parameters, microscopic quasiparticle scattering amplitudes, superfluid specific heats, and potentially other normal liquid pr