Phys. Rev. Lett. 68, 1327–1330 (1992)Precession of a single vortex line in superfluid 3BReceived 8 January 1992; published in the issue dated 2 March 1992 This paper reports the discovery of a new vortex phenomenon in superfluid 3B. 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 κ=(1.020±0.03)h/2m3, where m3 is the mass of the 3He atom. © 1992 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.68.1327
DOI:
10.1103/PhysRevLett.68.1327
PACS:
67.40.Vs, 47.15.Ki, 67.40.Hf, 67.50.Fi
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.