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VOLUME 56 | ISSUE 1 | PAGE 41
Macroscopic Josephson effect in superfluid 3He-B
Recently an experiment with a single vortex line of macroscopic length in superfluid 3Hc-B has been reported. In this superfluid the periodic motion of the vortex was observed with a period of several minutes.1 We discuss this periodic process in terms of the macroscopic ac Josephson effect and derive an expression for the period T, which is defined by the geometry and by the circulation quantum — h /2m3.




Permission given by American Institute of Physics is appreciated.