We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Surface Tension of Pure Liquid Helium Isotopes.
- Authors
Dyugaev, A. M.; Grigoriev, P. D.
- Abstract
The effects caused by vapor inhomogeneity over liquid helium are considered. Both pure isotopes have surface levels, whose population increases with temperature T. We separated their contribution to the temperature dependence of surface tension σ[sub 3](T) and σ[sub 4](T) and compared our theoretical results with the results of Japanese experimental works [1–3]. For liquid He[sup 3], one has σ[sub 3](T) = σ[sub 3](0) – α[sup ∞][sub 3]T[sup 2] at 0.2 K < T < 1 K and σ[sub 3](T) = σ[sub 3](0) – α[sup 0][sub 3]T[sup 2 ] exp(–Δ[sub 3]/T) at T < 0.2 K, with Δ[sub 3]≈0.25 K. For liquid He[sup 4],σ[sub 4](T) = σ[sub 4](0) – AT[sup 7/3] – α[sup 0][sub 4]T[sup 2] exp(–Δ[sub 4]/T) at T < 2 K, where A is the Atkins constant and Δ[sub 4]≈4 K. The parameters α[sup 0][sub 3],α[sup ∞][sub 3], and α[sup 0][sub 4] depend on the fluid properties. © 2003 MAIK “Nauka / Interperiodica”.
- Subjects
LIQUID helium; ISOTOPES; SURFACE tension; MATHEMATICAL models
- Publication
JETP Letters, 2003, Vol 78, Issue 7, p466
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/1.1633319