Abstract
A slow cool-down at constant rotation velocity Ω from the normal to the superfluid state is expected to give the equilibrium state of vortex lines. We have checked this by counting the number of vortex lines in3He-B using cw NMR. Our measurements with 0≤Ω≤0.28 rad/s confirm the expectation.
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References
R. J. Donnelly,Quantized Vortices in Helium II, (Cambridge University Press, 1991).
E. V. Thuneberg, Phys. Rev. B36, 3583 (1987).
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Xu, W., Plaçais, B., Ruutu, V.M. et al. Equilibrium number of quantized vortex lines in rotating3He-B. Czech J Phys 46 (Suppl 1), 11–12 (1996). https://doi.org/10.1007/BF02569421
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DOI: https://doi.org/10.1007/BF02569421