Phonon-Quasiparticle Interactions in Dilute Solutions of ${He}^{3}$ in Superfluid ${He}^{4}$ : III. Attenuation of First Sound Above 0.2°K

5 September 1968

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 173 (1) , 306-313
https://doi.org/10.1103/physrev.173.306

Abstract

Utilizing a previously developed phonon Boltzmann equation we extend to higher temperatures an earlier calculation of first sound attenuation in dilute solutions of

{He}^{3}

in superfluid

{He}^{4}

. The present calculation takes into account thermal phonon-

{He}^{3}

scattering and is valid up to about 0.7°K. The results are in good overall agreement with experiment.

Keywords

This publication has 11 references indexed in Scilit:

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Physical Review B, 1968
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Physical Review Letters, 1968
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Physical Review B, 1967
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Phonon-Quasiparticle Interactions in Dilute Solutions ofHe3in SuperfluidHe4: III. Attenuation of First Sound Above 0.2°K

Abstract

Keywords

Phonon-Quasiparticle Interactions in Dilute Solutions of ${He}^{3}$ in Superfluid ${He}^{4}$ : III. Attenuation of First Sound Above 0.2°K