Ballistic propagation of thermal excitations near a vortex in superfluid He3-B

Abstract

Andreev scattering of thermal excitations is a powerful tool for studying quantized vortices and turbulence in superfluid He3-B at very low temperatures. We write Hamilton's equations for a quasiparticle in the presence of a vortex line, determine its trajectory, and find under wich conditions it is Andreev reflected. To make contact with experiments, we generalize our results to the Onsager vortex gas, and find values of the intervortex spacing in agreement with less rigorous estimates.

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Cited by in corpus (8)

• Particles-vortex interactions and flow visualization in He4
• Interaction of ballistic quasiparticles and vortex configurations in superfluid He3-B
• Propagation of thermal excitations in a cluster of vortices in superfluid 3He-B
• Visualizing Pure Quantum Turbulence in Superfluid ${}^3$He: Andreev Reflection and its Spectral Properties
• Visualization of quantum turbulence in superfluid ${}^3$He-B: Combined numerical/experimental study of Andreev reflection
• Quasiparticle scattering measurements of laminar and turbulent vortex flow in the spin-down of superfluid 3He-B
• Scattering length of Andreev reflection from quantized vortices in ${}^3$He-$B$
• Andreev reflection in rotating superfluid ${}^3$He-B