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Theory of pair breaking by vibrating macroscopic objects in superfluid 3He

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Theory of pair breaking by vibrating macroscopic objects in superfluid 3He. / Lambert, Colin.
In: Physica B: Condensed Matter, Vol. 178, No. 1-4, 02.05.1992, p. 294-303.

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

Harvard

Lambert, C 1992, 'Theory of pair breaking by vibrating macroscopic objects in superfluid 3He', Physica B: Condensed Matter, vol. 178, no. 1-4, pp. 294-303. https://doi.org/10.1016/0921-4526(92)90208-A

APA

Lambert, C. (1992). Theory of pair breaking by vibrating macroscopic objects in superfluid 3He. Physica B: Condensed Matter, 178(1-4), 294-303. https://doi.org/10.1016/0921-4526(92)90208-A

Vancouver

Lambert C. Theory of pair breaking by vibrating macroscopic objects in superfluid 3He. Physica B: Condensed Matter. 1992 May 2;178(1-4):294-303. doi: 10.1016/0921-4526(92)90208-A

Author

Lambert, Colin. / Theory of pair breaking by vibrating macroscopic objects in superfluid 3He. In: Physica B: Condensed Matter. 1992 ; Vol. 178, No. 1-4. pp. 294-303.

Bibtex

@article{9841c6cd64b64be792bfa6ee4128370c,
title = "Theory of pair breaking by vibrating macroscopic objects in superfluid 3He",
abstract = "An intuitive picture of dissipation through pair breaking by macroscopic, vibrating objects in an isotropic superfluid is presented, which predicts a critical velocity for direct quasi-particle emission of upsilon(c) = upsilon-0/(1 + alpha), where upsilon-0 is the Landau velocity and alpha characterizes the superfluid backflow. A new intermediate frequency regime is identified, in which pulsed experiments should reveal a hierarchy of critical velocities and sinusoidally vibrating objects will exhibit a crossover to diffusive behaviour. A model of flow through a channel with a rough surface is analyzed, which yields for the instantaneous dissipation Q approximately (upsilon - upsilon(c))5 and Q approximately upsilon-2, at low and high velocities, respectively.",
author = "Colin Lambert",
year = "1992",
month = may,
day = "2",
doi = "10.1016/0921-4526(92)90208-A",
language = "English",
volume = "178",
pages = "294--303",
journal = "Physica B: Condensed Matter",
issn = "0921-4526",
publisher = "ELSEVIER SCIENCE BV",
number = "1-4",

}

RIS

TY - JOUR

T1 - Theory of pair breaking by vibrating macroscopic objects in superfluid 3He

AU - Lambert, Colin

PY - 1992/5/2

Y1 - 1992/5/2

N2 - An intuitive picture of dissipation through pair breaking by macroscopic, vibrating objects in an isotropic superfluid is presented, which predicts a critical velocity for direct quasi-particle emission of upsilon(c) = upsilon-0/(1 + alpha), where upsilon-0 is the Landau velocity and alpha characterizes the superfluid backflow. A new intermediate frequency regime is identified, in which pulsed experiments should reveal a hierarchy of critical velocities and sinusoidally vibrating objects will exhibit a crossover to diffusive behaviour. A model of flow through a channel with a rough surface is analyzed, which yields for the instantaneous dissipation Q approximately (upsilon - upsilon(c))5 and Q approximately upsilon-2, at low and high velocities, respectively.

AB - An intuitive picture of dissipation through pair breaking by macroscopic, vibrating objects in an isotropic superfluid is presented, which predicts a critical velocity for direct quasi-particle emission of upsilon(c) = upsilon-0/(1 + alpha), where upsilon-0 is the Landau velocity and alpha characterizes the superfluid backflow. A new intermediate frequency regime is identified, in which pulsed experiments should reveal a hierarchy of critical velocities and sinusoidally vibrating objects will exhibit a crossover to diffusive behaviour. A model of flow through a channel with a rough surface is analyzed, which yields for the instantaneous dissipation Q approximately (upsilon - upsilon(c))5 and Q approximately upsilon-2, at low and high velocities, respectively.

U2 - 10.1016/0921-4526(92)90208-A

DO - 10.1016/0921-4526(92)90208-A

M3 - Journal article

VL - 178

SP - 294

EP - 303

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

SN - 0921-4526

IS - 1-4

ER -