Published January 27, 1975 | Version v1
Journal article Metadata-only

Frequency and temperature dependence of sound velocity in liquid helium-4: a test of the phonon dispersion relation

Creators

  • 1. Brown Univ., Providence

Description

Changes ΔC/C in sound velocity C in liquid helium-4 over the frequency range 1 to 15 MHz were studied as a function of temperature for 0.45> T> 0.1 K. The experimental results are in qualitative agreement with predictions of positive phonon dispersion for small momentum values.

Additional details

Identifiers

DOI
10.1103/physrevlett.34.186;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
34
Journal Issue
4
Series
Phys. Rev. Lett.
Journal Page Range
186-189
ISSN
0031-9007

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
6189091
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
DISPERSION RELATIONS; FREQUENCY DEPENDENCE; HELIUM II; PHONONS; SOUND WAVES; TEMPERATURE DEPENDENCE; VELOCITY; WAVE PROPAGATION
Descriptors DEC
EVEN-EVEN NUCLEI; HELIUM ISOTOPES; HELIUM 4; ISOTOPES; LIGHT NUCLEI; NUCLEI; QUASI PARTICLES; STABLE ISOTOPES

Optional Information

Notes
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