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Vortex creation in the expansion of He II from just below the lambda transition.

Dodd, M. E. and Hendry, P. C. and Lawson, N. S. and Lee, R. A. M. and McClintock, Peter V. E. (1996) Vortex creation in the expansion of He II from just below the lambda transition. Czechoslovak Journal of Physics, 46 (Supple). pp. 43-44. ISSN 0011-4626

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Abstract

Quantised vortices are created when Hell is expanded from a point close to, but slightly (about 3mK) below, the lambda transition. It is believed that these probably arise through conventional flow processes, caused by non-idealities in the design of the expansion system. Their density is smaller than that of vortices created via the Kibble mechanism in expansions passing through the transition; nonetheless, their presence inevitably reduces the accuracy of the latter experiments for modeling cosmic string creation. An investigation of the phenomenon with improved bolometry, is described and discussed.

Item Type: Article
Journal or Publication Title: Czechoslovak Journal of Physics
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
Faculty of Arts & Social Sciences > Politics & International Relations (Merged into PPR 2010-08-01)
ID Code: 32060
Deposited By: Professor P. V. E. McClintock
Deposited On: 09 Mar 2010 09:40
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 17:05
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/32060

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