Viscous damping of second sound near the lambda point of liquid /sup 4/He

Journal Article · Mon Aug 08 04:00:00 EDT 1983 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.51.487· OSTI ID:5720715

Ferrell, R A; Bhattacharjee, J K

The theoretical second-sound damping in /sup 4/He II is too small in the background region by 40%. Viscous damping in the normal fluid is identified as the origin of the missing attenuation. Because of simple two-fluid kinematics, this damping grows below the lambda point as the superfluid density. The strength of the damping is determined by the coefficient of bulk viscosity, which is already known from the measured background first-sound damping above the lambda point.

• Research Organization: Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742
• OSTI ID: 5720715
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 51:6; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DAMPING
DATA
EVEN-EVEN NUCLEI
FLUIDS
HELIUM 4
HELIUM II
HELIUM ISOTOPES
INFORMATION
ISOTOPES
LAMBDA POINT
LIGHT NUCLEI
NUCLEI
NUMERICAL DATA
PHYSICAL PROPERTIES
QUANTUM FLUIDS
SECOND SOUND
STABLE ISOTOPES
THEORETICAL DATA
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE