Generation and Detection of Quantum Turbulence in Superfluid <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi>H</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>3</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow><mi>e</mi><mi>−</mi><mi mathvariant="italic">B</mi></math></span>

S. N. Fisher; A. J. Hale; A. M. Guénault; G. R. Pickett

doi:10.1103/PhysRevLett.86.244

Generation and Detection of Quantum Turbulence in Superfluid ${}^{3}H e - B$

S. N. Fisher, A. J. Hale, A. M. Guénault, and G. R. Pickett

Phys. Rev. Lett. 86, 244 – Published 8 January 2001

Abstract

We describe the first direct observations of turbulence in superfluid $^{3} He - B$ . 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.