Energy loss from a moving vortex in superfluid helium

  title={Energy loss from a moving vortex in superfluid helium},
  author={R J Zieve and Cynthia Frei and Deanna Lynn Wolfson},
  journal={Physical Review B},
We present measurements on both energy loss and pinning for a vortex terminating on the curved surface of a cylindrical container. We vary surface roughness, cell diameter, fluid velocity, and temperature. Although energy loss and pinning both arise from interactions between the vortex and the surface, their dependences on the experimental parameters differ, suggesting that different mechanisms govern the two effects. We propose that the energy loss stems from reconnections with a mesh of… 

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