Thermal flux of quasiparticles and the transition between two regimes of turbulence in He3-B

C. F. Barenghi; Y. A. Sergeev; N. Suramlishvili; P. J. van Dijk

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arXiv · 0910.5677

Thermal flux of quasiparticles and the transition between two regimes of turbulence in He3-B

C. F. Barenghi·Y. A. Sergeev·N. Suramlishvili·P. J. van Dijk

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Abstract

We compute the Andreev reflection coefficient of a flux of thermal quasiparticles in He3-B incident upon various two-dimensional vortex configurations. We find that, for the same number of positive and negative vortex points, the reflection coefficient is much reduced if the points are arranged in pairs (which corresponds to a gas of vortex rings in three-dimensions) rather than random (which corresponds to a vortex tangle in three-dimensions). This results is consistent with measurements performed by Bradley et al. at the University of Lancaster.

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C. F. Barenghi, Y. A. Sergeev, N. Suramlishvili, P. J. van Dijk. 2009-10-29. Thermal flux of quasiparticles and the transition between two regimes of turbulence in He3-B. https://arxiv.org/abs/0910.5677

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