Phonon-Quasiparticle Scattering in Dilute 3He/4He Mixtures
Phonon-3He quasiparticle scattering times in dilute mixtures of 3He in liquid 4He have been determined using the fast-heat-pulse technique. These scattering times were found to be in reasonably good numerical agreement with those theoretically calculated for Rayleigh-like scattering by Baym and Ebner. The scattering is shown to exhibit a strong pressure dependence.
KeywordsPulse Shape Heat Pulse Sound Transition General Dispersion Relation Roton Minimum
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