Propagation of thermal excitations in a cluster of vortices in superfluid 3He-B

Abstract

We describe the first measurement on Andreev scattering of thermal excitations from a vortex configuration with known density, spatial extent, and orientations in 3He-B superfluid. The heat flow from a blackbody radiator in equilibrium rotattion at constant angular velocity is measured with two quartz fork oscillators.

Keywords

• Propagation of thermal excitations
• cluster
• vortices
• superfluid
• 3He-B