Precession of a single vortex line in superfluid sup 3 He- B

This paper reports the discovery of a new vortex phenomenon in superfluid {sup 3}He-{ital B}. A single filament of quantized vortex line precesses as a solid body around a wire extending along the axis of a cylinder. The precession frequency equals the angular velocity of the apparatus at which the...

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Bibliographic Details
Published in:Physical review letters 1992-03, Vol.68:9
Main Authors: Zieve, R.J., Mukharsky, Y., Close, J.D., Davis, J.C., Packard, R.E.
Format: Article
Language:English
Subjects:
CIRCULATING SYSTEMS
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CONFIGURATION
CYLINDRICAL CONFIGURATION
EVEN-ODD NUCLEI
FILAMENTS
HELIUM 3
HELIUM 3 B
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
MEASURING METHODS
NUCLEI
PRECESSION
QUANTIZATION
QUANTUM NUMBERS
STABLE ISOTOPES 665420 > Superfluidity-- (1992-)
VORTICES
WIRES
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Summary:This paper reports the discovery of a new vortex phenomenon in superfluid {sup 3}He-{ital B}. A single filament of quantized vortex line precesses as a solid body around a wire extending along the axis of a cylinder. The precession frequency equals the angular velocity of the apparatus at which the presence of a single quantum of circulation minimizes the system's free energy. The period of precession is related to the circulation quantum and the dimensions of the apparatus. Thus a measurement of the precession period is an accurate determination of the quantum unit. We find {kappa}=(1.020{plus minus}0.03){ital h}/2{ital m}{sub 3}, where {ital m}{sub 3} is the mass of the {sup 3}He atom.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.68.1327