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Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Turbulence of Second Sound Waves in Superfluid 4He: Effect of Low-Frequency Resonant Perturbations.
AU - McClintock, Peter V. E.
AU - Efimov, V. B.
AU - Ganshin, A. N.
AU - Kolmakov, G. V.
AU - Mezhov-Deglin, L. P.
N1 - The final publication is available at Springer via http://dx.doi.org/10.1007/s10909-007-9563-y
PY - 2008/2
Y1 - 2008/2
N2 - We report the results of investigations of acoustic turbulence in a system of nonlinear second sound waves in a high-quality resonator filled with superfluid 4He. It was observed that subharmonics of a periodic driving force applied to the system may be generated via a parametric instability. We find that application of an additional low-frequency pumping to the turbulent system results in the generation of waves at combination frequencies of the driving forces and also leads to substantial changes in the energy spectrum of the acoustic oscillations.
AB - We report the results of investigations of acoustic turbulence in a system of nonlinear second sound waves in a high-quality resonator filled with superfluid 4He. It was observed that subharmonics of a periodic driving force applied to the system may be generated via a parametric instability. We find that application of an additional low-frequency pumping to the turbulent system results in the generation of waves at combination frequencies of the driving forces and also leads to substantial changes in the energy spectrum of the acoustic oscillations.
KW - Wave turbulence · Superfluid 4He · Second sound · Energy cascade
U2 - 10.1007/s10909-007-9563-y
DO - 10.1007/s10909-007-9563-y
M3 - Journal article
VL - 150
SP - 394
EP - 401
JO - Journal of Low Temperature Physics
JF - Journal of Low Temperature Physics
SN - 0022-2291
IS - 3-4
ER -