Kinetics of vacancions in solid He4
S. E. Kal’noĭPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kovM. A. Strzhemechnyı̆Physicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kov
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A semiquantitative calculation of the cross sections for interaction of vacancions in solid He4 with different lattice defects is performed. Estimates are obtained for the coefficient of diffusion of vacancions. A macroscopic equation describing the kinetics of vacancions, including the possibility of their creation and absorption, is formulated. The contribution of vacancions to thermal conductivity is calculated.
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