Home > Research > Publications & Outputs > A roton-driven mechanism for nucleation of nega...
View graph of relations

A roton-driven mechanism for nucleation of negatively charged vortex rings in isotopically pure 4He.

Research output: Contribution to journalJournal article


<mark>Journal publication date</mark>31/03/1980
<mark>Journal</mark>Physics Letters A
Issue number3-4
Number of pages3
Pages (from-to)303-305
<mark>Original language</mark>English


We have measured the temperature dependence of the vortex nucleation rate due to negative ions in isotopically pure superfluid 4He. We conclude that nucleation proceeds via two independent mechanisms: a temperature-independent "intrinsic" mechanism; and a roton-driven mechanism, dominant above 0.6 K.