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

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

研究成果: Article

4 引用 (Scopus)

抄録

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

Fingerprint

wire
vortices
low frequencies
protuberances
vortex generators
generators
vibration
causes
detectors

ASJC Scopus subject areas

  • Physics and Astronomy(all)

これを引用

Vortex emission by a low-frequency vibrating wire in superfluid 3He-B. / Nago, Yusuke; Inui, M.; Kado, R.; Obara, K.; Yano, H.; Ishikawa, O.; Hata, T.

:: Journal of Physics: Conference Series, 巻 150, 番号 3, 032071, 2009.

研究成果: Article

Nago, Yusuke ; Inui, M. ; Kado, R. ; Obara, K. ; Yano, H. ; Ishikawa, O. ; Hata, T. / Vortex emission by a low-frequency vibrating wire in superfluid 3He-B. :: Journal of Physics: Conference Series. 2009 ; 巻 150, 番号 3.
@article{572d5434e03545d180bc94a951f691ed,
title = "Vortex emission by a low-frequency vibrating wire in superfluid 3He-B",
abstract = "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.",
author = "Yusuke Nago and M. Inui and R. Kado and K. Obara and H. Yano and O. Ishikawa and T. Hata",
year = "2009",
doi = "10.1088/1742-6596/150/3/032071",
language = "English",
volume = "150",
journal = "Journal of Physics: Conference Series",
issn = "1742-6588",
publisher = "IOP Publishing Ltd.",
number = "3",

}

TY - JOUR

T1 - Vortex emission by a low-frequency vibrating wire in superfluid 3He-B

AU - Nago, Yusuke

AU - Inui, M.

AU - Kado, R.

AU - Obara, K.

AU - Yano, H.

AU - Ishikawa, O.

AU - Hata, T.

PY - 2009

Y1 - 2009

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=77952521833&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77952521833&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/150/3/032071

DO - 10.1088/1742-6596/150/3/032071

M3 - Article

AN - SCOPUS:77952521833

VL - 150

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 3

M1 - 032071

ER -