Year: 1995
Type: article
Abstract: Nucleation of vortices in units of one quantum has been observed with c.w. NMR in a rotating cylinder filled with 3 He-B. During acceleration a new vortex is created each time the counterflow velocity at the perimeter reaches a critical value v c ( T, p ). The measured v c resembles the calculated velocity v cb ( T, p ) of the bulk superflow instability, but is smaller by a factor with power law dependence on the superfluid coherence length. This indicates that a nucleation event takes place whenever the flow exceeds v cb locally at the nucleation site and the nucleation barrier vanishes.
Source: Europhysics Letters (EPL)
Authors: Ü Parts, V. M. H Ruutu, J. H Koivuniemi, Yu. M Bunkov, V. V Dmitriev, M Fogelström, M Huebner, Y Kondo, N. B Kopnin, J. S Korhonen, M Krusius, O. V Lounasmaa, P. I Soininen, G. E Volovik
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2018467252