AC Measurements of a Coupling Between Dissipative Heat Flux and Mutual Friction Force in He II

  • Félix Vidal
  • Michel Le Ray
  • Maurice François
  • Daniel Lhuillier

Abstract

Previous measurements on the variation of second-sound velocity in the presence of superfluid vortices suggest the existence of a coupling between the dissipative heat flux and the mutual friction force.1 This paper presents our latest results on the second-sound measurements and preliminary results on the fourth-sound velocity in presence of a supercritical superflow.

Keywords

Entropy Vortex Attenuation Helium 

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Copyright information

© Springer Science+Business Media New York 1974

Authors and Affiliations

  • Félix Vidal
    • 1
  • Michel Le Ray
    • 2
  • Maurice François
    • 2
  • Daniel Lhuillier
    • 2
  1. 1.Groupe de Physique des SolidesEcole Normale SupérieureParisFrance
  2. 2.Laboratoire de Méchanique des FluidesUniversité de ParisOrsayFrance

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