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.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
D. Clubb, et al., J. Low Temp. Phys. 136(1/2), 1 (2004)
R. Blaauwgeers, et al., J. Low Temp. Phys. 146(5/6), 537 (2007)
G. Sheshin, et al., Low Temp. Phys. 34(11), 875 (2008)
M. Blazkova, et al., Phys. Rev. B 79(5), 054522 (2009)
O.V. Kolosov, et al., Integrated circuitry for controlling analysis of a fluid. USA Patent 7,158,897; 2 January 2007
P. Skyba, S. Holt, Design and construction of this convertor (2009 to be published)
M. Blazkova, D. Schmoranzer, L. Skrbek, Phys. Rev. E 75(2), 025302 (2007)
K. Karrai, R.D. Grober, Tip-sample distance control for near-field scanning optical microscopes, in Near-Field Optics, ed. by M.A. Paesler, P.T. Moyer. Proc. SPIE, vol. 2535 (SPIE, Bellingham, 1995), p. 69
J. Rychen, et al., Rev. Sci. Instrum. 71, 1695 (2000)
W.F. Vinen, L. Skrbek, H.A. Nichol, J. Low Temp. Phys. 135(5/6), 423 (2004)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Efimov, V.B., Garg, D., Kolosov, O. et al. Direct Measurement of the Critical Velocity Above Which a Tuning Fork Generates Turbulence in Superfluid Helium. J Low Temp Phys 158, 456–461 (2010). https://doi.org/10.1007/s10909-009-0026-5
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10909-009-0026-5