Measurement of the surface tension of superfluid4He at low temperature by capillary wave resonances期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Measurement of the surface tension of superfluid4He at low temperature by capillary wave resonances

Authors:	P. Roche G. Deville N. J. Appleyard F. I. B. Williams

Affiliation:	(1) Laboratoire de La Matière Condensée Quantique, Service de Physique de l'Etat Condensé, CEA-CEN Saclay, 91191 Gif-sur-Yvette Cedex, France;(2) Present address: Ecole Normale Supérieure, LPS, 24 rue Lhomond 75231, 05 Paris Cedex, France;(3) Present address: Depart of Physics, University of Exeter, EX4 4QL, UK

Abstract:	The surface tension of liquid⁴He is determined from the frequencies of micron wavelength capillary waves. The extrapolated zero temperature value, σ=375±3 μJm⁻², is in agreement with the pioneering static capillary rise determination but 6% higher than the more recent surface tension gravity wave measurements. Flow in the meniscus in this latter experiment is shown to mimic a surface tension correction to the dispersion relation there used which is of the same sign and magnitude as the discrepancy.

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