A microscopic calculation of the force on a wire moving through superfluid sup 3 He-B in the ballistic regime

Journal Article · Wed May 01 04:00:00 EDT 1991 · Journal of Low Temperature Physics; (United States)

DOI:https://doi.org/10.1007/BF00682120· OSTI ID:5293887

Fisher, S N; Pickett, G R; Watts-Tobin, R J ^[1]

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1. Lancaster Univ. (United Kingdom)

When a microscopic object moves through superfluid {sup 3}He, it experiences a force arising from the effect of quasiparticle scattering. The authors develop a three-dimensional microscopic model to calculate the force on a smooth cylinder moving at constant velocity v as a model of a vibrating wire. At large (subcritical) wire velocity, the force tends to an asymptotic value as 1/v{sup 2}, rather than exponentially as in a one-dimensional calculation. At low v, the force is linear in v. The authors discuss briefly the agreement of their calculations with experimental measurements on a vibrating wire below 0.2 {Tc}, where the quasiparticle trajectories are ballistic.

• OSTI ID: 5293887
• Journal Information: Journal of Low Temperature Physics; (United States), Journal Name: Journal of Low Temperature Physics; (United States) Vol. 83:3-4; ISSN 0022-2291; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

665420* -- Superfluidity-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COLLISIONS
DAMPING
ELECTRONIC EQUIPMENT
EQUIPMENT
EVEN-ODD NUCLEI
HELIUM 3
HELIUM 3 B
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL MODELS
MECHANICAL VIBRATIONS
MOTION
NUCLEI
QUASI PARTICLES
RESONATORS
SCATTERING
STABLE ISOTOPES
TRAJECTORIES
VELOCITY
WIRES