Crossover of Dissipation Mechanism in Flowing Superfluid ${}^{3}{He}$ - $B$ Near the Tricritical Pressure

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27 August 1984

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 53 (9) , 930-933
https://doi.org/10.1103/physrevlett.53.930

Abstract

Dc flow of superfluid

{}^{3}{He}

-

B

through a rectangular superleak exhibits two dissipative regimes and two critical currents with temperature dependence of the form

J_{c} = b {(1 - \frac{T}{T_{c}})}^{a}

. At low pressures

a ≃ \frac{3}{2}

and

b

increases with pressure. Around 21.5 bars a crossover occurs to a new dissipation regime with

a ≃ 2

and the prefactor

b

then decreases with pressure.

Keywords

This publication has 10 references indexed in Scilit:

Observation of a Remanent Vortex-Line Density in Superfluid Helium
Physical Review Letters, 1984
Flow of superfluid3He through micrometer-size channels
Journal of Low Temperature Physics, 1983
Observation of Flow Dissipation in ${}^{3}{He}$ - $B$
Physical Review Letters, 1982
Dissipation in the Flow of ${}^{3}{He}$ - $A$ and ${}^{3}{He}$ - $B$ through a Narrow Rectangular Channel
Physical Review Letters, 1980
Dissipation of Flow in Superfluid ${}^{3}{He}$ - $A$
Physical Review Letters, 1980
Depairing critical current of 3He-B at all temperatures including gap distortion
Journal of Low Temperature Physics, 1980
Anisotropic gap distortion due to superflow and the depairing critical current in superfluid 3He-B
Journal of Low Temperature Physics, 1980
Observations of a Critical Current in ${}^{3}{He}$ - $B$
Physical Review Letters, 1979
Critical Velocities in Superfluid ${}^{3}{He}$
Physical Review Letters, 1979
Suppression of P-wave superfluidity in long, narrow pores
Journal of Low Temperature Physics, 1978