Vortex emission by a low-frequency vibrating wire in superfluid 3He-B

Y. Nago, M. Inui, R. Kado, K. Obara, H. Yano, O. Ishikawa, T. Hata

研究成果: Article

4 引用 (Scopus)

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We report the investigation of vortex emission by a vibrating wire in superfluid 3He-B at a pressure of 28 bar. We used two vibrating wires with 47 Hz and 183 Hz resonance frequencies as a generator and a detector of vortices. The onset velocity of vortex emission for the 183 Hz vibrating wire is higher than a pair-breaking velocity, indicating that pair breaking causes vortex generation. In contrast, the onset velocity for the 47 Hz vibrating wire is lower than the pair-breaking velocity. This result suggests that another mechanism of vortex emission arises for the lower-frequency vibrating wire: pair breaking due to local flow enhanced by protuberances on the surface of the wire, or instability of remanent vortices attached to the wire by vibration.

元の言語English
記事番号032071
ジャーナルJournal of Physics: Conference Series
150
発行部数3
DOI
出版物ステータスPublished - 2009

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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