Measurement of Turbulence in Superfluid 3He-B

Details Measurement of Turbulence in Superfluid 3He-B Measurement of Turbulence in Superfluid 3He-B

2004-06-08

arxiv.org/abs/cond-mat/0406202v1

Journal of Low Temperature Physics, September (2004)

Physics

Condensed Matter

Soft Condensed Matter

31 pages, 10 figures

Scientific paper

10.1023/B:JOLT.0000041266.50507.

The experimental investigation of superfluid turbulence in 3He-B is generally not possible with the techniques which have been developed for 4He-II. We describe a new method by which a transient burst of turbulent vortex expansion can be generated in 3He-B. It is based on the injection of a few vortex loops into rotating vortex-free flow. The time-dependent evolution of the quantized vorticity is then monitored with NMR spectroscopy. Using these techniques the transition between regular (i.e. vortex number conserving) and turbulent vortex dynamics can be recorded at T ~ 0.6 Tc and a number of other characteristics of turbulence can be followed down to a temperature of T ~ 0.4 Tc.

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