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Nucleation of negatively charged vortex rings in superfluid Helium-4 near its solidification pressure.

Allum, D. R. and McClintock, Peter V. E. (1978) Nucleation of negatively charged vortex rings in superfluid Helium-4 near its solidification pressure. Journal of Low Temperature Physics, 31 (3-4). pp. 321-338. ISSN 0022-2291

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Abstract

The rate nu at which negative ions nucleate vortex rings in He II has been measured at 25 bar for electric fields E up to 12kV/cm and temperatures T down to 0.4 K. A strong temperature dependence of nu observed for T < 0.6 K and E < 5 kV/cm is attributed to the influence of isotopic impurities. Although the temperature-independent behavior found for T < 0.6 K and 5 < E < 12 kV/cm is consistent with a theoretical prediction by Bowley, the relatively very much larger values of nu measured near 1K indicate a serious deficiency in the model on which the theory is based.

Item Type: Article
Journal or Publication Title: Journal of Low Temperature Physics
Subjects: ?? qc ??
Departments: Faculty of Science and Technology > Physics
ID Code: 32507
Deposited By: Professor P. V. E. McClintock
Deposited On: 12 Apr 2010 11:13
Refereed?: Yes
Published?: Published
Last Modified: 30 Aug 2017 12:55
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/32507

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