Baggaley, A.W. and Tsepelin, Viktor and Barenghi, C. F. and Fisher, Shaun and Pickett, George and Sergeev, Y.A. and Suramlishvili, Nugzar (2015) Visualizing pure quantum turbulence in superfluid He3 : Andreev reflection and its spectral properties. Physical review letters, 115 (1): 015302. ISSN 1079-7114
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Abstract
Superfluid He3−B in the zero-temperature limit offers a unique means of studying quantum turbulence by the Andreev reflection of quasiparticle excitations by the vortex flow fields. We validate the experimental visualization of turbulence in He3−B by showing the relation between the vortex-line density and the Andreev reflectance of the vortex tangle in the first simulations of the Andreev reflectance by a realistic 3D vortex tangle, and comparing the results with the first experimental measurements able to probe quantum turbulence on length scales smaller than the intervortex separation.