Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Decay of quantum turbulence generated by a vibrating grid at low temperatures in superfluid He-3-B.
AU - Bradley, D. Ian
AU - Fisher, Shaun N.
AU - Guénault, A.M.
AU - Haley, Richard P.
AU - Matthews, C. J.
AU - Pickett, George R.
AU - Tsepelin, Viktor
AU - Zaki, K.
PY - 2006/9/7
Y1 - 2006/9/7
N2 - We describe measurements of the decay of quantum turbulence produced by a vibrating grid in superfluid He-3-B at low temperatures. Two nearby NbTi vibrating wire resonators at different distances from the grid are used to detect the turbulence via a reduction in the quasiparticle damping owing to Andreev reflection by the flow around the vortex lines. The decay time constant of this turbulence, after stopping the grid motion, is longer at the wire furthest from the grid. This suggests that either the tangle evolves and moves away from the grid once the grid motion has been stopped, or that there is a faster decay mechanism in operation close to the grid.
AB - We describe measurements of the decay of quantum turbulence produced by a vibrating grid in superfluid He-3-B at low temperatures. Two nearby NbTi vibrating wire resonators at different distances from the grid are used to detect the turbulence via a reduction in the quasiparticle damping owing to Andreev reflection by the flow around the vortex lines. The decay time constant of this turbulence, after stopping the grid motion, is longer at the wire furthest from the grid. This suggests that either the tangle evolves and moves away from the grid once the grid motion has been stopped, or that there is a faster decay mechanism in operation close to the grid.
KW - superfluidity
KW - Helium-3B
KW - quantum turbulence
KW - vibrating grid
U2 - 10.1063/1.2354657
DO - 10.1063/1.2354657
M3 - Journal article
VL - 850
SP - 175
EP - 176
JO - AIP Conference Proceedings
JF - AIP Conference Proceedings
SN - 0094-243X
ER -