Nucleation of quantized vortex rings in 4He nanodroplets

Whereas most of the phenomena associated with superfluidity have been observed in finite-size helium systems, the nucleation of quantized vortices has proven elusive. Here we show that the solvation of a Ba+ ion created by photoionization of neutral Ba at the surface of a 4He nanodroplet leads to the nucleation of a quantized ring vortex. The vortex is nucleated on a ten picosecond timescale at the equator of a solid-like solvation structure that forms around the Ba+ ion. The process is expected to be quite general and very efficient under standard experimental conditions.


Published in:
Journal of Chemical Physics, 140, 14, 131101
Year:
2014
Publisher:
Melville, American Institute of Physics
ISSN:
0021-9606
Keywords:
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 Record created 2013-12-20, last modified 2018-03-17

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