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Novel oscillating aerogel experiments in superfluid He-3 at ultralow temperatures.

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

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Novel oscillating aerogel experiments in superfluid He-3 at ultralow temperatures. / Brussaard, Peter; Fisher, Shaun N.; Guénault, A.M. et al.
In: Journal of Low Temperature Physics, Vol. 121, No. 5-6, 12.2000, p. 555-560.

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

Harvard

Brussaard, P, Fisher, SN, Guénault, AM, Hale, AJ & Pickett, GR 2000, 'Novel oscillating aerogel experiments in superfluid He-3 at ultralow temperatures.', Journal of Low Temperature Physics, vol. 121, no. 5-6, pp. 555-560. https://doi.org/10.1023/A:1017551108300

APA

Brussaard, P., Fisher, S. N., Guénault, A. M., Hale, A. J., & Pickett, G. R. (2000). Novel oscillating aerogel experiments in superfluid He-3 at ultralow temperatures. Journal of Low Temperature Physics, 121(5-6), 555-560. https://doi.org/10.1023/A:1017551108300

Vancouver

Brussaard P, Fisher SN, Guénault AM, Hale AJ, Pickett GR. Novel oscillating aerogel experiments in superfluid He-3 at ultralow temperatures. Journal of Low Temperature Physics. 2000 Dec;121(5-6):555-560. doi: 10.1023/A:1017551108300

Author

Brussaard, Peter ; Fisher, Shaun N. ; Guénault, A.M. et al. / Novel oscillating aerogel experiments in superfluid He-3 at ultralow temperatures. In: Journal of Low Temperature Physics. 2000 ; Vol. 121, No. 5-6. pp. 555-560.

Bibtex

@article{68e6571e08f74a55a0fcb48747728ee7,
title = "Novel oscillating aerogel experiments in superfluid He-3 at ultralow temperatures.",
abstract = "We present novel experiments on a disk of 98% aerogel oscillating in super-fluid He-3 at ultralow temperatures. The aerogel disk is attached to a goal post shaped vibrating wire resonator and immersed in liquid He-3 cooled by a Lancaster style nuclear cooling stage. At low pressures we see no evidence for superfluidity within the aerogel down to our base temperature of below < 0.11T(c). At higher pressures we observe large temperature dependent frequency shifts, reminiscent of torsional oscillator experiments. We find the transition temperature at 5 bar to be around 600 K. The response of the resonator is highly non linear when the helium in the aerogel is superfluid. The resonant frequency decreases strongly with increasing wire amplitude. This offers an exciting new technique for measuring the superfluid properties of He-3 in aerogel in the ultralow temperature regime.",
keywords = "helium-3, superfluid, aerogel",
author = "Peter Brussaard and Fisher, {Shaun N.} and A.M. Gu{\'e}nault and Hale, {A. J.} and Pickett, {George R.}",
year = "2000",
month = dec,
doi = "10.1023/A:1017551108300",
language = "English",
volume = "121",
pages = "555--560",
journal = "Journal of Low Temperature Physics",
issn = "0022-2291",
publisher = "SPRINGER/PLENUM PUBLISHERS",
number = "5-6",

}

RIS

TY - JOUR

T1 - Novel oscillating aerogel experiments in superfluid He-3 at ultralow temperatures.

AU - Brussaard, Peter

AU - Fisher, Shaun N.

AU - Guénault, A.M.

AU - Hale, A. J.

AU - Pickett, George R.

PY - 2000/12

Y1 - 2000/12

N2 - We present novel experiments on a disk of 98% aerogel oscillating in super-fluid He-3 at ultralow temperatures. The aerogel disk is attached to a goal post shaped vibrating wire resonator and immersed in liquid He-3 cooled by a Lancaster style nuclear cooling stage. At low pressures we see no evidence for superfluidity within the aerogel down to our base temperature of below < 0.11T(c). At higher pressures we observe large temperature dependent frequency shifts, reminiscent of torsional oscillator experiments. We find the transition temperature at 5 bar to be around 600 K. The response of the resonator is highly non linear when the helium in the aerogel is superfluid. The resonant frequency decreases strongly with increasing wire amplitude. This offers an exciting new technique for measuring the superfluid properties of He-3 in aerogel in the ultralow temperature regime.

AB - We present novel experiments on a disk of 98% aerogel oscillating in super-fluid He-3 at ultralow temperatures. The aerogel disk is attached to a goal post shaped vibrating wire resonator and immersed in liquid He-3 cooled by a Lancaster style nuclear cooling stage. At low pressures we see no evidence for superfluidity within the aerogel down to our base temperature of below < 0.11T(c). At higher pressures we observe large temperature dependent frequency shifts, reminiscent of torsional oscillator experiments. We find the transition temperature at 5 bar to be around 600 K. The response of the resonator is highly non linear when the helium in the aerogel is superfluid. The resonant frequency decreases strongly with increasing wire amplitude. This offers an exciting new technique for measuring the superfluid properties of He-3 in aerogel in the ultralow temperature regime.

KW - helium-3

KW - superfluid

KW - aerogel

U2 - 10.1023/A:1017551108300

DO - 10.1023/A:1017551108300

M3 - Journal article

VL - 121

SP - 555

EP - 560

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

SN - 0022-2291

IS - 5-6

ER -