BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:The Generation and Decay of Grid Turbulence in a Dissipationless F
 luid--4He at 20 mK - Gary Ihas\, University of Florida
DTSTART:20060510T101500Z
DTEND:20060510T111500Z
UID:TALK4854@talks.cam.ac.uk
CONTACT:cb203
DESCRIPTION:Turbulence produced by a towed-grid in liquid 4He at very low 
 temperatures\nis predicted to decay not by viscous losses\, as occurs when
  there is\nmutual friction between the superfluid and normal fluid\, but b
 y phonon\nradiation when the energy flows into smaller length scales by a 
 kind of\nKelvin-wave cascade on the quantized vortex lines making up the\n
 turbulence.  Great efforts have been expended to create and detect\nturbul
 ence in helium at very low temperatures.  This talk will concentrate\non t
 he progress made\, especially in the design and construction of\nsupercond
 ucting actuators and small temperature and pressure sensors.\nSome results
  with a vibrating grid may be presented.
LOCATION:Mott Seminar Room\, Cavendish Laboratory\, Department of Physics
END:VEVENT
END:VCALENDAR