Hydrodynamics of crystals with interstitials

Details Hydrodynamics of crystals with interstitials Hydrodynamics of crystals with interstitials

2000-09-09

arxiv.org/abs/cond-mat/0009138v2

Physics

Condensed Matter

Materials Science

5 pages, ReVTeX

Scientific paper

The hydrodynamic equations for a crystals with interstitials, taking into account the dissipative processes of the viscosity, heat conduction and the interstitial diffusion are derived. To achieve that we use the phenomenological approach has originally been applied in the theory of the superfluids for the derivation of equations of the two-fluid hydrodynamics. On the basis of the obtained equations the problem of the propagation of plane waves in the crystals with low interstitial concentration has been considered. For the case when effects of the viscosity and the heat conduction are absent and the diffusion mobility of interstitials is small the absorption coefficient of longitudinal sound wave has been calculated.

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