Article

First and second sound velocities along the melting curve of 4He

N. E. DyuminPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, KharkovS. V. SvatkoPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, KharkovV. N. Grigor’evPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Kharkov

Soviet Journal of Low Temperature Physicsjournal1989en

ABI

Abstract

First and second sound velocities along the melting curve are measured in the temperature range from Tλ to 1.0 K. The second sound velocity is shown to be described successfully by a thermodynamic expression taking into account the thermal expansion of He II. The first sound velocity along the melting curve is found to be temperature independent.

Topics

Quantum, superfluid, helium dynamics Atomic and Subatomic Physics Research Cold Atom Physics and Bose-Einstein Condensates

Identifiers

DOI: 10.1063/10.0032104

Citations and references

Cited by 04 references

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