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Anomalous temperature dependence of the vortex nucleation rate due to negative ions in ultradilute superfluid 3He/4He solutions.

Research output: Contribution to journalJournal article

<mark>Journal publication date</mark>2/02/1994
<mark>Journal</mark>Physica B: Condensed Matter
Issue number10
Number of pages2
Pages (from-to)843-844
<mark>Original language</mark>English


The rate nu at which negative ions create quantized vortex rings in superfluid He-3/He-4 solutions has been measured for temperatures T within 90 < T < 500 mK, for He-3/He-4 isotopic ratios x3 < 10-7, pressures P within 17 < P < 25 bar, and electric fields E within 102 < E < 106 Vm-1. For fixed P, x3 and E, it has been found that nu(T) exhibits unexpected sharp local maxima, together with associated small velocity anomalies.

Bibliographic note

Proceedings of the 20th International Conference on Low Temperature Physics, 4-11 August 1993, Eugene OR USA.