Intermittent Switching between Potential Flow and Turbulence in Superfluid Helium at mK Temperatures

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dc.creatorNiemetz, Michael
dc.creatorKerscher, Hubert
dc.creatorSchoepe, Wilfried
dc.date2000-09-20
dc.date.accessioned2026-07-07T02:38:46Z
dc.date.available2026-07-07T02:38:46Z
dc.descriptionSuperfluid flow around an oscillating microsphere is investigated at temperatures down to 25 mK. Stable laminar flow below a critical velocity and turbulence at large drives are found to be separated below 0.5 K by an intermediate range of driving forces where the flow is unstable, intermittently switching between laminar and turbulent phases. We have recorded time series of this switching phenomenon and have made a statistical analysis of the switching probability. The mean lifetime of the turbulent phases grows with increasing drive and becomes infinite at a critical value. Stability of the laminar phases above the critical velocity is limited by natural background radioactivity or cosmic rays.
dc.description4 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0009299
dc.identifierhttp://arxiv.org/abs/cond-mat/0009299
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/16801
dc.subjectCondensed Matter
dc.subjectChaotic Dynamics
dc.subjectFluid Dynamics
dc.titleIntermittent Switching between Potential Flow and Turbulence in Superfluid Helium at mK Temperatures
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