project title: Hydrodynamics of Quantized Vortices in a Long Rotating Column: Kelvin-Wave Instability and Superfluid Turbulence
project leader: Dr. Rob Blaauwgeers
access given (in days): 123
access used (in days): 123
local host: Prof. Matti Krusius
home institution: Leiden University
country of institution: The Netherlands
starting date (yyyy-mm-dd): 2005-03-01
In a dynamic state, the stability of quantized vortices has been discovered to change as a function of temperature (or mutual friction damping) in superfluid helium-3: At high temperatures (and high damping) dynamic processes in externally applied flow are vortex number conserving and the solutions are deterministic. At low temperatures (and low damping) even a single isolated vortex loop manages to generate new vortices which ultimately interact to produce turbulence. We plan to investigate these instabilities.
The measurements are prepared and are expected to start in June.