Experiments on quantized turbulence at mK temperatures

Davis, S. I. and Hendry, P. C. and McClintock, Peter V. E. and Nichol, H. (2001) Experiments on quantized turbulence at mK temperatures. In: Quantized vortex dynamics and superfluid turbulence. Lecture Notes in Physics . Springer-Verlag, Berlin, pp. 73-79. ISBN 3540422269

Abstract

An experiment to investigate the free decay of quantized turbulence in isotopically pure superfluid He-4 at millikelvin temperatures is discussed. The vortices are created by a vibrating grid, and detected by their trapping of negative ions. Preliminary results suggest the existence of a temperature-independent vortex decay mechanism below T » 70 mK.