Instability of trajectories of solid particles around vortex lines

Y. A. Sergeev, C. F. Barenghi, D. Kivotides, W. F. Vinen

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Progress in implementing the particle image velocimetry visualization technique in liquid helium has stimulated interest in understanding the dynamics of micron-size solid particles in a superfluid. We show that at sufficiently low temperatures, in the limit of a pure superfluid, the trajectories of small, neutrally buoyant, solid particles are unstable and deviate from the trajectories of superfluid particles, even in the simplest case of the motion around a single stationary straight vortex line. The result also applies to classical Euler flows. The implications of this result for the visualization of turbulent superflow at very low temperatures are discussed.
Original languageEnglish
Article number052502
Number of pages3
JournalPhysical Review B: Condensed Matter and Materials Physics
Issue number5
Publication statusPublished - 13 Feb 2006


  • vortices
  • particles
  • temperature


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