Generation and detection of quantum turbulence in superfluid 3He-B |
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Authors: | Fisher S N Hale A J Guénault A M Pickett G R |
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Institution: | Department of Physics, Lancaster University, Lancaster LA1 4YB, United Kingdom. |
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Abstract: | 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. |
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