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Direct measurement of the critical velocity above which a tuning fork generates turbulence in superfluid helium.

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Direct measurement of the critical velocity above which a tuning fork generates turbulence in superfluid helium. / Efimov, V. B.; Garg, D.; Kolosov, O.; McClintock, P. V. E.

In: Journal of Low Temperature Physics, Vol. 158, No. 3-4, 02.2010, p. 456-461.

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@article{e68efbb039b243a8a958fd2a30843319,
title = "Direct measurement of the critical velocity above which a tuning fork generates turbulence in superfluid helium.",
abstract = "The dynamics of an electrically-driven 8 kHz quartz tuning fork has been studied experimentally in liquid helium-4 in the temperature range 1.3 < T <4.2 K under the saturated vapour pressure. The fork has relatively large dimensions compared to standard 32 kHz fork used in recent investigations. The velocity of the tip of the fork prong is measured by the indirect electromechanical equivalent method and is compared with the velocity of another 8 kHz fork (from the same batch) determined by direct optical measurement of the oscillation amplitude through Michelson interferometry. A comparison of these results has provided absolute values for the critical velocity of the transition to the turbulent state.",
keywords = "Quantum fluid · Quantum turbulence · Tuning forks · Superfluid helium · Critical velocity",
author = "Efimov, {V. B.} and D. Garg and O. Kolosov and McClintock, {P. V. E.}",
year = "2010",
month = feb
doi = "10.1007/s10909-009-0026-5",
language = "English",
volume = "158",
pages = "456--461",
journal = "Journal of Low Temperature Physics",
issn = "0022-2291",
publisher = "SPRINGER/PLENUM PUBLISHERS",
number = "3-4",

}

RIS

TY - JOUR

T1 - Direct measurement of the critical velocity above which a tuning fork generates turbulence in superfluid helium.

AU - Efimov, V. B.

AU - Garg, D.

AU - Kolosov, O.

AU - McClintock, P. V. E.

PY - 2010/2

Y1 - 2010/2

N2 - The dynamics of an electrically-driven 8 kHz quartz tuning fork has been studied experimentally in liquid helium-4 in the temperature range 1.3 < T <4.2 K under the saturated vapour pressure. The fork has relatively large dimensions compared to standard 32 kHz fork used in recent investigations. The velocity of the tip of the fork prong is measured by the indirect electromechanical equivalent method and is compared with the velocity of another 8 kHz fork (from the same batch) determined by direct optical measurement of the oscillation amplitude through Michelson interferometry. A comparison of these results has provided absolute values for the critical velocity of the transition to the turbulent state.

AB - The dynamics of an electrically-driven 8 kHz quartz tuning fork has been studied experimentally in liquid helium-4 in the temperature range 1.3 < T <4.2 K under the saturated vapour pressure. The fork has relatively large dimensions compared to standard 32 kHz fork used in recent investigations. The velocity of the tip of the fork prong is measured by the indirect electromechanical equivalent method and is compared with the velocity of another 8 kHz fork (from the same batch) determined by direct optical measurement of the oscillation amplitude through Michelson interferometry. A comparison of these results has provided absolute values for the critical velocity of the transition to the turbulent state.

KW - Quantum fluid · Quantum turbulence · Tuning forks · Superfluid helium · Critical velocity

U2 - 10.1007/s10909-009-0026-5

DO - 10.1007/s10909-009-0026-5

M3 - Journal article

VL - 158

SP - 456

EP - 461

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

SN - 0022-2291

IS - 3-4

ER -