First optical observations of superfluid He 3
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© 1992 American Physical Society (APS). http://www.aps.org/
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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2392-2395
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Physical Review Letters, Volume 69, Issue 16
Abstract
The shape of the free surface of rotating superfluid B3 has been investigated optically. The drastic change in viscosity at the superfluid transition was seen directly. Focusing of light reflected from the liquid surface and expansion of the light beam when it travels through the He3 sample show that the meniscus of the rotating superfluid has the same parabolic shape as that of the normal liquid, which implies an equilibrium density of vortices. The fountain effect in B3 could be seen directly as well: Liquid accumulates into the illuminated region.Description
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Manninen, A. J. & Pekola, Jukka & Kira, G. M. & Ruutu, J. P. & Babkin, A. V. & Alles, H. & Lounasmaa, O. V. 1992. First optical observations of superfluid He 3. Physical Review Letters. Volume 69, Issue 16. P. 2392-2395. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.69.2392.