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Profound influence of isotopic impurities on vortex nucleation in He II.

Research output: Contribution to journalJournal article

Published

Journal publication date1981
JournalPhysica B: Condensed Matter
Volume107
Number of pages2
Pages573-574
Original languageEnglish

Abstract

We have confirmed earlier suspicions that the rate nu at which negative ions nucleate vortex rings in Hell is quite extraordinarily sensitive to the presence of tiny traces of 3He isotopic impurity. We find that, in low electric fields E, nu(E) for natural helium exhibits a maximum whose position and magnitude are dependent on temperature.

Bibliographic note

Proceedings of the 16th International Conference on Low Temperature Physics, Los Angeles, 19-25 August 1981.