Low Temperature Physics: 24, 72 (1998); https://doi.org/10.1063/1.593540 (4 pages)
Физика Низких Температур: Том 24, Выпуск 2 (Февраль 1998), c. 104-108    ( к оглавлению , назад )

Lambda point thermodynamics of confined liquid helium: negative surface specific heat

R. A. Ferrell

Center for Theoretical Physics of the Department of Physics, University of Maryland College Park, Maryland 20742, USA
E-mail: rferrell@muppetn.umd.edu

J. K. Bhattacharjee

Indian Association for the Cultivation of Science, Jadavpur, Calcutta 700 032, India

Аннотация

We present some theoretical considerations that are relevant to the forthcoming measurements in microgravity of the specific heat of confined liquid helium (the flight experiment "CHEX"). Primary attention is devoted to the suppression near the boundaries, the "negative surface specific heat". Above the lambda point, we compute this to lowest order in the epsilon-expansion: below the lambda point our discussion is more restricted.

PACS:
64.60.Ht - Dynamic critical phenomena
67.40.Hf - Hydrodynamics in specific geometries, flow in narrow channels
67.40.Pm - Transport processes, second and other sounds, and thermal counterflow; Kapitza resistance