TY - JOUR
T1 - Nonlinear acoustical investigations of 3He-B near the two-phonon pair breaking edge
AU - Manninen, A. J.
AU - Torizuka, K.
AU - Babkin, A. V.
AU - Pekola, J.P.
PY - 1994/2/2
Y1 - 1994/2/2
N2 - We report on experiments using energetic ultrasound pulses on superfluid 3He-B. Near the two-phonon pair breaking edge, at hf=Δ(T), an anomaly in ultrasonic attenuation has been detected. This feature grows with increasing acoustical intensity, and a new peak develops in the attenuation spectrum. The anomaly, coupling nonlinearly to ultrasound, can be observed also in the phase velocity of sound; in a magnetic field the anomaly splits to at least three features.
AB - We report on experiments using energetic ultrasound pulses on superfluid 3He-B. Near the two-phonon pair breaking edge, at hf=Δ(T), an anomaly in ultrasonic attenuation has been detected. This feature grows with increasing acoustical intensity, and a new peak develops in the attenuation spectrum. The anomaly, coupling nonlinearly to ultrasound, can be observed also in the phase velocity of sound; in a magnetic field the anomaly splits to at least three features.
UR - http://www.scopus.com/inward/record.url?scp=17944396910&partnerID=8YFLogxK
U2 - 10.1016/0921-4526(94)90712-9
DO - 10.1016/0921-4526(94)90712-9
M3 - Article
AN - SCOPUS:17944396910
SN - 0921-4526
VL - 194-196
SP - 765
EP - 766
JO - Physica B: Physics of Condensed Matter
JF - Physica B: Physics of Condensed Matter
IS - PART 1
ER -