Long-wavelength sound propagation in superfluid-filled porous media with novel geometries

Journal Article · Wed Nov 30 23:00:00 EST 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.38.11209· OSTI ID:6589988

Roth, J A; Brosius, T P; Maynard, J D

The acoustic-scattering corrections of several types of superleaks have been measured, providing information about inertial drag effects in the flow of superfluid /sup 4/He. The porous media which have been studied include Al/sub 2/O/sub 3/ packed powder, Grafoil, and Grafoil foam. The frequency dependence of the acoustic-scattering correction was measured for the Grafoil media.

• Research Organization: The Pennsylvania State University, University Park, Pennsylvania 16802
• OSTI ID: 6589988
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 38:16; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
EVEN-EVEN NUCLEI
FLUIDS
FREQUENCY DEPENDENCE
HELIUM 4
HELIUM II
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
MATERIALS
NUCLEI
OXIDES
OXYGEN COMPOUNDS
POROUS MATERIALS
POWDERS
QUANTUM FLUIDS
SCATTERING
SOUND WAVES
STABLE ISOTOPES
SUPERFLUIDITY
WAVE PROPAGATION