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Evidence for an energy barrier impeding the creation of quantized vortices in He II.

Research output: Contribution to journalJournal article


Journal publication date1987
JournalJapanese Journal of Applied Physics
Number of pages2
Original languageEnglish


The rate nu at which negative ions create quantized vortex rings in isotopically pure He II has been measured for temperatures 70 < T < 500 mK, pressures 12 < P < 19 bar and electric fields 10^4 < E < 10^S V/m. The result can be taken to imply the existence of an energy barrier impeding the nucleation process of ~3K.

Bibliographic note

Proceedings of the 18th lnternational Conference on Low Temperature Physics, Kyoto, 1987