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Wetting of Superfluid 4He by Liquid 3He
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Physical Review Letters, Volume 73, issue 10, pp. 1388-1391
Abstract
We have investigated optically the spreading of 3He on top of the 4He-rich solution in phase-separated helium-mixture films, 20-50 μm thick. In equilibrium, the 3He layer wets the 4He-rich phase completely, but nearly circular or stripelike pools of 3He-rich phase are stabilized instead when 4He atoms are condensed to the liquid sample at the rate 1015-5 × 1015 atoms/cm2s. For the contact angle we obtain about 10 mrad, which suggests a fractional change of the 3He surface tension by a factor of 10−5 from the equilibrium value.
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Alles, H, Ruutu, J, Babkin, A & Hakonen, P J 1994, 'Wetting of Superfluid 4He by Liquid 3He', Physical Review Letters, vol. 73, no. 10, pp. 1388-1391. https://doi.org/10.1103/PhysRevLett.73.1388