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Quenching of the ion/vortex-ring transition in He II by intense electric fields.

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<mark>Journal publication date</mark>26/04/1982
<mark>Journal</mark>Physical review letters
Issue number17
Number of pages3
Pages (from-to)1190-1192
Publication StatusPublished
<mark>Original language</mark>English


The rate nu at which negative ions nucleate charged vortex rings in isotopically pure superfluid helium-4 has been measured for electric fields of up to 2.5 x 10^6 V/m with pressures and temperatures within 17 < P < 25 bars, 0.3 < T < 0.9 K. It is found that the nucleation process is completely quenched (nu = 0) for E > 2 x 10^6 V/m. The implications of this result for theories of the nucleation mechanism are discussed.