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.

References in corpus (2)

• Bottleneck crossover between classical and quantum superfluid turbulence
• Twisted vortex state

Cited by in corpus (6)

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