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Temperature-dependent vortex nucleation in isotopically pure superfluid 4He.

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Temperature-dependent vortex nucleation in isotopically pure superfluid 4He. / Nancolas, G. G.; McClintock, Peter V. E.; Moss, F. E.; Bowley, R. M.

In: Journal of Physics C: Solid State Physics, Vol. 14, 1981, p. L681-L686.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Nancolas, GG, McClintock, PVE, Moss, FE & Bowley, RM 1981, 'Temperature-dependent vortex nucleation in isotopically pure superfluid 4He.', Journal of Physics C: Solid State Physics, vol. 14, pp. L681-L686. https://doi.org/10.1088/0022-3719/14/23/002

APA

Nancolas, G. G., McClintock, P. V. E., Moss, F. E., & Bowley, R. M. (1981). Temperature-dependent vortex nucleation in isotopically pure superfluid 4He. Journal of Physics C: Solid State Physics, 14, L681-L686. https://doi.org/10.1088/0022-3719/14/23/002

Vancouver

Nancolas GG, McClintock PVE, Moss FE, Bowley RM. Temperature-dependent vortex nucleation in isotopically pure superfluid 4He. Journal of Physics C: Solid State Physics. 1981;14:L681-L686. https://doi.org/10.1088/0022-3719/14/23/002

Author

Nancolas, G. G. ; McClintock, Peter V. E. ; Moss, F. E. ; Bowley, R. M. / Temperature-dependent vortex nucleation in isotopically pure superfluid 4He. In: Journal of Physics C: Solid State Physics. 1981 ; Vol. 14. pp. L681-L686.

Bibtex

@article{6f8110f0641b4274b39a4f6bb0771052,
title = "Temperature-dependent vortex nucleation in isotopically pure superfluid 4He.",
abstract = "We have investigated the temperature dependence of the rate nu which negative ions nucleate vortex rings in isotopically pure superfluid 4He. Measurements of nu(E,T) are presented for a pressure of 23 bar with electric fields E in 5.8 < E < 1.2 x l0^6 V m-l and temperatures T in 0.3 < T < 0.8 K. Provided that due allowance is made for the drag arising from ion-excitation scattering, (nu - nu0) is proportional to Nr, where Nr is the thermal roton density and nu0 is the temperature-dependent limiting value of nu below 0.5 K. We show that this discovery is consistent with the existence of an additional vortex nucleation mechanism, characterised by a critical velocity reduced by roton absorption, but ultimately determined by a requirement for the conservation of energy and momentum.",
author = "Nancolas, {G. G.} and McClintock, {Peter V. E.} and Moss, {F. E.} and Bowley, {R. M.}",
year = "1981",
doi = "10.1088/0022-3719/14/23/002",
language = "English",
volume = "14",
pages = "L681--L686",
journal = "Journal of Physics C: Solid State Physics",
issn = "0022-3719",
publisher = "Institute of Physics",

}

RIS

TY - JOUR

T1 - Temperature-dependent vortex nucleation in isotopically pure superfluid 4He.

AU - Nancolas, G. G.

AU - McClintock, Peter V. E.

AU - Moss, F. E.

AU - Bowley, R. M.

PY - 1981

Y1 - 1981

N2 - We have investigated the temperature dependence of the rate nu which negative ions nucleate vortex rings in isotopically pure superfluid 4He. Measurements of nu(E,T) are presented for a pressure of 23 bar with electric fields E in 5.8 < E < 1.2 x l0^6 V m-l and temperatures T in 0.3 < T < 0.8 K. Provided that due allowance is made for the drag arising from ion-excitation scattering, (nu - nu0) is proportional to Nr, where Nr is the thermal roton density and nu0 is the temperature-dependent limiting value of nu below 0.5 K. We show that this discovery is consistent with the existence of an additional vortex nucleation mechanism, characterised by a critical velocity reduced by roton absorption, but ultimately determined by a requirement for the conservation of energy and momentum.

AB - We have investigated the temperature dependence of the rate nu which negative ions nucleate vortex rings in isotopically pure superfluid 4He. Measurements of nu(E,T) are presented for a pressure of 23 bar with electric fields E in 5.8 < E < 1.2 x l0^6 V m-l and temperatures T in 0.3 < T < 0.8 K. Provided that due allowance is made for the drag arising from ion-excitation scattering, (nu - nu0) is proportional to Nr, where Nr is the thermal roton density and nu0 is the temperature-dependent limiting value of nu below 0.5 K. We show that this discovery is consistent with the existence of an additional vortex nucleation mechanism, characterised by a critical velocity reduced by roton absorption, but ultimately determined by a requirement for the conservation of energy and momentum.

U2 - 10.1088/0022-3719/14/23/002

DO - 10.1088/0022-3719/14/23/002

M3 - Journal article

VL - 14

SP - L681-L686

JO - Journal of Physics C: Solid State Physics

JF - Journal of Physics C: Solid State Physics

SN - 0022-3719

ER -