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 Karl Franzens University Graz

Graz University of Technology 

Vorticity and shapes of spinning superfluid helium droplets
Prof. Andrey Vilesov
University of Southern California, zzt. Sabbatical am Max Planck Institut in Göttingen
17:15 - 18:15 Tuesday 19 March 2013 TUG P2

In this talk I will discuss first observations of vorticity in supefluid helium droplets. I will start with reviewing the basics of vorticity and previous theoretical works on vortices in He droplets. Then I will discuss experiments in large He droplets having diameter of 100 -1000 nm and the results of surface deposition experiments, which show vortex-catalyzed formation of elongated silver aggregates. Finally, the results of very recent experiments on X-ray diffraction imaging of the droplets at Stanford SLAC will be introduced. These indicate formation of Abrikosov vortex arrays as well as substantial shape deformations in the rotating superfluid droplets.