Journal of Low Temperature Physics

, Volume 51, Issue 1–2, pp 99–116 | Cite as

Phonon-roton scattering and kinetic coefficients in helium II

  • I. M. Khalatnikov
  • Yu. A. Matveev


Significant factors in the scattering of an energetic phonon by a roton are the inelasticity of the process and the form of the dispersion curve ℰ(P) for rotons, and these factors should be taken into account. We propose a simple method for calculating the scattering cross section based on a dependence ℰ(P) outside the framework of the standard parabolic Landau approximation. The scattering cross section for this process and the phonon contributions to the viscosity and thermal conductivity coefficients are found. The expressions are in good agreement with experiment, without the use of any adjustable parameters.


Viscosity Thermal Conductivity Helium Magnetic Material Dispersion Curve 
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Copyright information

© Plenum Publishing Corporation 1983

Authors and Affiliations

  • I. M. Khalatnikov
    • 1
  • Yu. A. Matveev
    • 1
  1. 1.L. D. Landau Institute for Theoretical PhysicsUSSR Academy of SciencesMoscowUSSR

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