The Effect of the Interphase Kinetics on the Motion of a Quantum Crystal in Superfluid Liquid

Abstract

The fall of a quantum crystal in the state of "burst-like growth" in a superfluid liquid is considered. The experimental data of the pressure variation in the container during the fall of a crystal are discussed. The model of the motion of the crystal is suggested taking the interface dynamics into account. The results for the numerical simulation of the fall of a crystal are consistent with the experimental data. We find a significant effect of the liquid-crystal interface kinetics on the hydrodynamics of the liquid flow encircling a crystal.

Electronic pumping of heat without charge transfer

“…Crystallization waves in 4 He [4] represent another example of decoupling between the flows of order and matter. In particular, a fall of a 4 He crystallite in superfluid 4 He proceeds partly via melting at the top and crystallization at the bottom of the crystallite [5]. As a result the crystalline order propagates at a faster speed than the matter itself.…”