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Behavior of quartz forks oscillating in isotopically pure He-4 in the T -> 0 limit

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

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Behavior of quartz forks oscillating in isotopically pure He-4 in the T -> 0 limit. / Garg, Deepak; Efimov, V. B.; Giltrow, M. et al.
In: Physical review B, Vol. 85, No. 14, 144518, 18.04.2012, p. -.

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

Harvard

Garg, D, Efimov, VB, Giltrow, M, McClintock, PVE, Skrbek, L & Vinen, WF 2012, 'Behavior of quartz forks oscillating in isotopically pure He-4 in the T -> 0 limit', Physical review B, vol. 85, no. 14, 144518, pp. -. https://doi.org/10.1103/PhysRevB.85.144518

APA

Garg, D., Efimov, V. B., Giltrow, M., McClintock, P. V. E., Skrbek, L., & Vinen, W. F. (2012). Behavior of quartz forks oscillating in isotopically pure He-4 in the T -> 0 limit. Physical review B, 85(14), -. Article 144518. https://doi.org/10.1103/PhysRevB.85.144518

Vancouver

Garg D, Efimov VB, Giltrow M, McClintock PVE, Skrbek L, Vinen WF. Behavior of quartz forks oscillating in isotopically pure He-4 in the T -> 0 limit. Physical review B. 2012 Apr 18;85(14):-. 144518. doi: 10.1103/PhysRevB.85.144518

Author

Garg, Deepak ; Efimov, V. B. ; Giltrow, M. et al. / Behavior of quartz forks oscillating in isotopically pure He-4 in the T -> 0 limit. In: Physical review B. 2012 ; Vol. 85, No. 14. pp. -.

Bibtex

@article{35da8367f2f24dc5888e5aa18727edab,
title = "Behavior of quartz forks oscillating in isotopically pure He-4 in the T -> 0 limit",
abstract = "We report that at low drives, the resonant frequencies and linewidths of nominally 32-kHz quartz tuning forks oscillating in isotopically pure superfluid He-4 at similar to 10 mK are dependent on the dimensions of their environment. We confirm the importance of coupling between forks and acoustic modes within the cell, and develop a theory of their coupled dynamics to account for the observations. The frequencies and linewidths are reproducible on a time scale of tens of minutes, but pronounced drifts are seen over longer intervals. We suggest that the drifts are attributable to changes in the velocity of sound due to tiny pressure changes. In studies at high drives, we observe two critical velocities: v(c1) approximate to 0.6 cm/s, where the drag may either increase or decrease, depending on the linewidth; and v(c2) approximate to 10 cm/s, above which there seems to be fully turbulent flow. At high drives, the behavior of the drag differs markedly between forks that appear otherwise to be very similar.",
author = "Deepak Garg and Efimov, {V. B.} and M. Giltrow and McClintock, {P. V. E.} and L. Skrbek and Vinen, {W. F.}",
note = "{\textcopyright}2012 American Physical Society",
year = "2012",
month = apr,
day = "18",
doi = "10.1103/PhysRevB.85.144518",
language = "English",
volume = "85",
pages = "--",
journal = "Physical review B",
issn = "1098-0121",
publisher = "AMER PHYSICAL SOC",
number = "14",

}

RIS

TY - JOUR

T1 - Behavior of quartz forks oscillating in isotopically pure He-4 in the T -> 0 limit

AU - Garg, Deepak

AU - Efimov, V. B.

AU - Giltrow, M.

AU - McClintock, P. V. E.

AU - Skrbek, L.

AU - Vinen, W. F.

N1 - ©2012 American Physical Society

PY - 2012/4/18

Y1 - 2012/4/18

N2 - We report that at low drives, the resonant frequencies and linewidths of nominally 32-kHz quartz tuning forks oscillating in isotopically pure superfluid He-4 at similar to 10 mK are dependent on the dimensions of their environment. We confirm the importance of coupling between forks and acoustic modes within the cell, and develop a theory of their coupled dynamics to account for the observations. The frequencies and linewidths are reproducible on a time scale of tens of minutes, but pronounced drifts are seen over longer intervals. We suggest that the drifts are attributable to changes in the velocity of sound due to tiny pressure changes. In studies at high drives, we observe two critical velocities: v(c1) approximate to 0.6 cm/s, where the drag may either increase or decrease, depending on the linewidth; and v(c2) approximate to 10 cm/s, above which there seems to be fully turbulent flow. At high drives, the behavior of the drag differs markedly between forks that appear otherwise to be very similar.

AB - We report that at low drives, the resonant frequencies and linewidths of nominally 32-kHz quartz tuning forks oscillating in isotopically pure superfluid He-4 at similar to 10 mK are dependent on the dimensions of their environment. We confirm the importance of coupling between forks and acoustic modes within the cell, and develop a theory of their coupled dynamics to account for the observations. The frequencies and linewidths are reproducible on a time scale of tens of minutes, but pronounced drifts are seen over longer intervals. We suggest that the drifts are attributable to changes in the velocity of sound due to tiny pressure changes. In studies at high drives, we observe two critical velocities: v(c1) approximate to 0.6 cm/s, where the drag may either increase or decrease, depending on the linewidth; and v(c2) approximate to 10 cm/s, above which there seems to be fully turbulent flow. At high drives, the behavior of the drag differs markedly between forks that appear otherwise to be very similar.

U2 - 10.1103/PhysRevB.85.144518

DO - 10.1103/PhysRevB.85.144518

M3 - Journal article

VL - 85

SP - -

JO - Physical review B

JF - Physical review B

SN - 1098-0121

IS - 14

M1 - 144518

ER -