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Anomalous damping of a low frequency vibrating wire in superfluid He-3-B due to vortex shielding

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Anomalous damping of a low frequency vibrating wire in superfluid He-3-B due to vortex shielding. / Bradley, D. I.; Fear, M. J.; Fisher, Shaun et al.
In: Journal of Low Temperature Physics, Vol. 175, No. 1-2, 04.2014, p. 372-378.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Bradley, DI, Fear, MJ, Fisher, S, Guenault, AM, Haley, RP, Lawson, CR, Pickett, GR, Schanen, R & Tsepelin, V 2014, 'Anomalous damping of a low frequency vibrating wire in superfluid He-3-B due to vortex shielding', Journal of Low Temperature Physics, vol. 175, no. 1-2, pp. 372-378. https://doi.org/10.1007/s10909-013-0923-5

APA

Bradley, D. I., Fear, M. J., Fisher, S., Guenault, A. M., Haley, R. P., Lawson, C. R., Pickett, G. R., Schanen, R., & Tsepelin, V. (2014). Anomalous damping of a low frequency vibrating wire in superfluid He-3-B due to vortex shielding. Journal of Low Temperature Physics, 175(1-2), 372-378. https://doi.org/10.1007/s10909-013-0923-5

Vancouver

Bradley DI, Fear MJ, Fisher S, Guenault AM, Haley RP, Lawson CR et al. Anomalous damping of a low frequency vibrating wire in superfluid He-3-B due to vortex shielding. Journal of Low Temperature Physics. 2014 Apr;175(1-2):372-378. doi: 10.1007/s10909-013-0923-5

Author

Bradley, D. I. ; Fear, M. J. ; Fisher, Shaun et al. / Anomalous damping of a low frequency vibrating wire in superfluid He-3-B due to vortex shielding. In: Journal of Low Temperature Physics. 2014 ; Vol. 175, No. 1-2. pp. 372-378.

Bibtex

@article{e5ffddc3cf6e436880ae9e86ec095059,
title = "Anomalous damping of a low frequency vibrating wire in superfluid He-3-B due to vortex shielding",
abstract = "We have investigated the behaviour of a large vibrating wire resonator in the B-phase of superfluid He-3 at zero pressure and at temperatures below 200 mu K. The vibrating wire has a low resonant frequency of around 60 Hz. At low velocities the motion of the wire is impeded by its intrinsic (vacuum) damping and by the scattering of thermal quasiparticle excitations. At higher velocities we would normally expect the motion to be further damped by the creation of quasiparticles from pair-breaking. However, for a range of temperatures, as we increase the driving force we observe a sudden decrease in the damping of the wire. This results from a reduction in the thermal damping arising from the presence of quantum vortex lines generated by the wire. These vortex lines Andreev-reflect low energy excitations and thus partially shield the wire from incident thermal quasiparticles.",
keywords = "Vibrating Wire, Superfluid Helium, Turbulence, Vortex Shielding, VERY-LOW TEMPERATURES, QUANTUM TURBULENCE, QUASI-PARTICLES, TRANSITION, HELIUM, MODEL, VELOCITY, FORCE",
author = "Bradley, {D. I.} and Fear, {M. J.} and Shaun Fisher and Guenault, {A. M.} and Haley, {R. P.} and Lawson, {C. R.} and Pickett, {G. R.} and R. Schanen and V. Tsepelin",
note = "{\textcopyright} The Author(s) 2013. This article is published with open access at Springerlink.com",
year = "2014",
month = apr,
doi = "10.1007/s10909-013-0923-5",
language = "English",
volume = "175",
pages = "372--378",
journal = "Journal of Low Temperature Physics",
issn = "0022-2291",
publisher = "SPRINGER/PLENUM PUBLISHERS",
number = "1-2",

}

RIS

TY - JOUR

T1 - Anomalous damping of a low frequency vibrating wire in superfluid He-3-B due to vortex shielding

AU - Bradley, D. I.

AU - Fear, M. J.

AU - Fisher, Shaun

AU - Guenault, A. M.

AU - Haley, R. P.

AU - Lawson, C. R.

AU - Pickett, G. R.

AU - Schanen, R.

AU - Tsepelin, V.

N1 - © The Author(s) 2013. This article is published with open access at Springerlink.com

PY - 2014/4

Y1 - 2014/4

N2 - We have investigated the behaviour of a large vibrating wire resonator in the B-phase of superfluid He-3 at zero pressure and at temperatures below 200 mu K. The vibrating wire has a low resonant frequency of around 60 Hz. At low velocities the motion of the wire is impeded by its intrinsic (vacuum) damping and by the scattering of thermal quasiparticle excitations. At higher velocities we would normally expect the motion to be further damped by the creation of quasiparticles from pair-breaking. However, for a range of temperatures, as we increase the driving force we observe a sudden decrease in the damping of the wire. This results from a reduction in the thermal damping arising from the presence of quantum vortex lines generated by the wire. These vortex lines Andreev-reflect low energy excitations and thus partially shield the wire from incident thermal quasiparticles.

AB - We have investigated the behaviour of a large vibrating wire resonator in the B-phase of superfluid He-3 at zero pressure and at temperatures below 200 mu K. The vibrating wire has a low resonant frequency of around 60 Hz. At low velocities the motion of the wire is impeded by its intrinsic (vacuum) damping and by the scattering of thermal quasiparticle excitations. At higher velocities we would normally expect the motion to be further damped by the creation of quasiparticles from pair-breaking. However, for a range of temperatures, as we increase the driving force we observe a sudden decrease in the damping of the wire. This results from a reduction in the thermal damping arising from the presence of quantum vortex lines generated by the wire. These vortex lines Andreev-reflect low energy excitations and thus partially shield the wire from incident thermal quasiparticles.

KW - Vibrating Wire

KW - Superfluid Helium

KW - Turbulence

KW - Vortex Shielding

KW - VERY-LOW TEMPERATURES

KW - QUANTUM TURBULENCE

KW - QUASI-PARTICLES

KW - TRANSITION

KW - HELIUM

KW - MODEL

KW - VELOCITY

KW - FORCE

U2 - 10.1007/s10909-013-0923-5

DO - 10.1007/s10909-013-0923-5

M3 - Journal article

VL - 175

SP - 372

EP - 378

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

SN - 0022-2291

IS - 1-2

ER -