Journal of Low Temperature Physics

, Volume 64, Issue 1–2, pp 21–27 | Cite as

Microscopic calculation of the heat transfer between a granular structure and liquid3He

  • D. Burton
  • C. J. Lambert
Article

Abstract

A recent formula for the heat transfer coefficient κbetween3He quasiparticles and phonons of a sintered metallic powder is evaluated using the phonon density of states of a microscopic model of a granular structure. The microscopic model describes a simple crystalline granular structure and contains extended modes only. When the dominant phonon wavelength λ is less than a typical grain size, κ possesses a low-temperature enhancement typical of a sintered metallic powder and over a limited range exhibits a linear variation with temperature.

Keywords

Grain Size Heat Transfer Transfer Coefficient Heat Transfer Coefficient Magnetic Material 

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Copyright information

© Plenum Publishing Corporation 1986

Authors and Affiliations

  • D. Burton
    • 1
  • C. J. Lambert
    • 1
  1. 1.Department of PhysicsUniversity of LancasterLancasterEngland

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