Damped oscillation of a magnetically-trapped superconducting micro-particle in superfluid helium: measurement of viscosity based on a hydrodynamic analysis

Shota Sasaki, Jun Naoi, Masato Takamune, Daisei Kondo, Yuta Takahashi, Mitsutaka Kumakura, Masaaki Ashida, Yoshiki Moriwaki*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We have developed a trap of a single superconducting micro-particle using a quadrupole magnetic field in superfluid helium. By displacing the particle from a stable static position and then releasing it, the particle was observed to oscillate around the stable position. Analyzing the damped oscillation, we have demonstrated the measurement of the viscosity of superfluid helium.

Original languageEnglish
Article number082003
JournalApplied Physics Express
Volume16
Issue number8
DOIs
StatePublished - 2023/08/01

Keywords

  • magnetic trap
  • microparticle
  • superconductivity
  • superfluid
  • viscosity

ASJC Scopus subject areas

  • General Engineering
  • General Physics and Astronomy

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