Two-phonon absorption by the real squashing mode in superfluid 3He-B
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
1991-06-17
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Language
en
Pages
4
3152-3155
3152-3155
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Physical Review Letters, Volume 66, issue 24
Abstract
We have observed in superfluid B3 two-phonon absorption, which is one of the nonlinear effects recently predicted by McKenzie and Sauls. The J=2+ real squashing mode was excited with two coincident sound pulses at the temperature T+, fsignal+fpump=frsq(T+), under 0, 2.7, and 3.5 bars pressure. The heights of the attenuation peaks scale almost linearly with the energy of the higher-intensity wave, in qualitative agreement with the theory. Furthermore, a satellite peak appears even in zero magnetic field, which originates from the reflected wave.Description
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Torizuka , K , Pekola , J P , Manninen , A J , Kyynäräinen , J M & McKenzie , R H 1991 , ' Two-phonon absorption by the real squashing mode in superfluid 3He-B ' , Physical Review Letters , vol. 66 , no. 24 , pp. 3152-3155 . https://doi.org/10.1103/PhysRevLett.66.3152