Wave processes in parallel channels with different degrees of damping of the normal component of superfluid helium

Journal Article · Thu Jun 01 04:00:00 EDT 1978 · Sov. J. Low Temp. Phys. (Engl. Transl.); (United States)

OSTI ID:6472938

Kekutiya, S E; Karchava, T A; Sanikidze, D G

The propagation of waves is considered, in a waveguide with a superleak, completely filled with superfluid He-II under conditions of partial damping of the normal component of the liquid. The velocities of propagation and also the coefficients of absorption of the combined first and fourth sounds and a modified second sound are calculated, and their dependence on the parameter delta= (L--d)/lambda/sub V/ is explained (L is the height of the superleak, d is the thickness of the layer of porous material in the superleak and lambda/sub V/ is the depth of penetration of the viscous wave). Such a waveguide can serve as a model for the propagation of waves in a filter having channels of different diameters.

• Research Organization: Institute of Cybernetics, Academy of Sciences of the Georgian SSR
• OSTI ID: 6472938
• Journal Information: Sov. J. Low Temp. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Low Temp. Phys. (Engl. Transl.); (United States) Vol. 4:6; ISSN SJLPD
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BOUNDARY CONDITIONS
DAMPING
EVEN-EVEN NUCLEI
FLUIDS
FOURTH SOUND
HELIUM 4
HELIUM II
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
NUCLEI
QUANTUM FLUIDS
SECOND SOUND
SOUND WAVES
STABLE ISOTOPES
WAVE PROPAGATION
WAVEGUIDES