We present experimental, numerical and theoretical studies of a vortex front propagating into a region of vortex-free flow of rotating superfluid 3He-B. We show that the nature of the front changes from laminar through quasi-classical turbulent to quantum turbulent with decreasing temperature. Our experiment provides the first direct measurement of the dissipation rate in turbulent vortex dynamics of 3He-B and demonstrates that the dissipation is temperature- and mutual friction-independent in the T->0 limit, and is strongly suppressed when the Kelvin-wave cascade on vortex lines is predicted to be involved in the turbulent energy transfer to smaller length scales.
@article{arxiv.0708.1095,
title = {Quantum turbulence in propagating superfluid vortex front},
author = {V. B. Eltsov and A. I. Golov and R. de Graaf and R. H"anninen and M. Krusius and V. S. L'vov and R. E. Solntsev},
journal= {arXiv preprint arXiv:0708.1095},
year = {2008}
}