Rights statement: The final publication is available at Springer via http://dx.doi.org/10.1007/s10909-006-9236-2
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Experimental study of the nonlinear second sound wave interaction in superfluid 4He.
AU - Efimov, V. B.
AU - Ganshin, A. N.
AU - McClintock, Peter V. E.
AU - Kolmakov, G. V.
N1 - The final publication is available at Springer via http://dx.doi.org/10.1007/s10909-006-9236-2
PY - 2006/11
Y1 - 2006/11
N2 - We report preliminary results of investigations of the nonlinear second sound wave interaction in a high-quality resonator filled with superfluid 4He. The anomalously large nonlinear coefficient of second sound allows us to observe the formation of higher harmonics while pumping the resonator at a resonant frequency and, in this manner, to study wave energy transfer from the low-frequency domain to the high-frequency domain over a wide frequency range. The observed nonequilibrium stationary wave distribution of amplitudes A f for multiple harmonics over wave frequency f may be described as , where s ≥ 1.5.
AB - We report preliminary results of investigations of the nonlinear second sound wave interaction in a high-quality resonator filled with superfluid 4He. The anomalously large nonlinear coefficient of second sound allows us to observe the formation of higher harmonics while pumping the resonator at a resonant frequency and, in this manner, to study wave energy transfer from the low-frequency domain to the high-frequency domain over a wide frequency range. The observed nonequilibrium stationary wave distribution of amplitudes A f for multiple harmonics over wave frequency f may be described as , where s ≥ 1.5.
U2 - 10.1007/s10909-006-9236-2
DO - 10.1007/s10909-006-9236-2
M3 - Journal article
VL - 145
SP - 155
EP - 164
JO - Journal of Low Temperature Physics
JF - Journal of Low Temperature Physics
SN - 0022-2291
IS - 1-4
ER -