Transport properties for a dilute solution of [sup 3]He in two-dimensional liquid [sup 4]He

Journal Article · Sun May 01 04:00:00 EDT 1994 · Journal of Low Temperature Physics; (United States)

DOI:https://doi.org/10.1007/BF00751788· OSTI ID:7021908

Um, C I; Kim, I H; Choi, Y M ^[1]; George, T F ^[2]

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1. Korea Univ., Seoul (Korea, Democratic People's Republic of)
2. Washington State Univ., Pullman, WA (United States)

The temperature variations of the diffusion coefficient D(T), thermal diffusion ratio k[sub T](T) and thermal conductivity k(T) in a dilute solution of [sup 3]He atoms in two-dimensional liquid helium are evaluated explicitly by solving the kinetic equations via phonon-phonon, phonon-roton, roton-roton, impurity-elementary excitation and impurity-impurity scatterings. In the low-temperature region, the main contributions to D(T) and k(T) come from the interactions between phonons and impurities, while in the high-temperature region the interactions between impurities and whole elementary excitations contribute more strongly to D(T) and k(T) than those of only elementary excitations. For a dilute solution, the thermal diffusion ratio k[sub T](T), neglecting the internal mass counterflow, is much smaller than the effective thermal diffusion ratio k[sub T](T), which is a function of thermostatic properties. The effective thermal conductivity k[sub eff] is much larger than the thermal conductivity. The behaviors of the two-dimensional diffusion coefficient and thermal conductivity are much like the bulk case, where they exhibit exponential decay with increasing temperature, although they are much smaller than those of the bulk case.

• OSTI ID: 7021908
• Journal Information: Journal of Low Temperature Physics; (United States), Journal Name: Journal of Low Temperature Physics; (United States) Vol. 95:3-4; ISSN JLTPAC; ISSN 0022-2291
• Country of Publication: United States
• Language: English

Related Subjects

665411* -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BINARY MIXTURES
DIFFUSION
DISPERSIONS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
HELIUM 3
HELIUM 4
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
MIXTURES
NUCLEI
PHYSICAL PROPERTIES
STABLE ISOTOPES
TEMPERATURE DEPENDENCE
THERMAL CONDUCTIVITY
THERMAL DIFFUSIVITY
THERMODYNAMIC PROPERTIES