Generation and detection of quantum turbulence in superfluid 3He-B.
We describe the first direct observations of turbulence in superfluid 3He-B. The turbulence is generated by a vibrating-wire resonator driven at velocities exceeding the pair-breaking critical velocity. It is detected by the resulting decrease in the thermal damping on a neighboring "detector" vibrating-wire resonator. The superfluid flow field associated with the turbulence Andreev reflects thermal quasiparticle excitations, effectively screening the detector wire, resulting in a decrease in the thermal damping.
Fisher
S N
SN
Department of Physics, Lancaster University, Lancaster LA1 4YB, United Kingdom.
Hale
A J
AJ
Guénault
A M
AM
Pickett
G R
GR