TY - JOUR
T1 - Two-phonon absorption by the real squashing mode in superfluid B3
AU - Torizuka, K.
AU - Pekola, J. P.
AU - Manninen, A. J.
AU - Kyynäräinen, J. M.
AU - McKenzie, R. H.
N1 - Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 1991
Y1 - 1991
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0043194433&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.66.3152
DO - 10.1103/PhysRevLett.66.3152
M3 - Article
AN - SCOPUS:0043194433
SN - 0031-9007
VL - 66
SP - 3152
EP - 3155
JO - Physical Review Letters
JF - Physical Review Letters
IS - 24
ER -