Depressions of superfluid density and transition temperature of /sup 3/He confined in small pores

Journal Article · Tue May 01 04:00:00 EDT 1984 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00683453· OSTI ID:6761197

Chainer, T; Morii, Y; Kojima, H

Using fourth-sound techniques, the superfluid density of /sup 3/He confined in three separately packed alumina powders having volume-averaged pore radius equal to 1.9, 0.44, and 0.18 ..mu..m were measured as a function of temperature at 10 pressures between 11 and 31 bar. Systematically larger depressions of superfluid density were observed as the pore size decreased. The measured pressure dependence of the depression of the superfluid transition temperature is consistent with that of the BCS expression for the coherence length. The quality factor of fourth-sound resonance was measured as a function of temperature at 20.5 and 30.9 bar. The highest quality factor measured was 40. The temperature dependence of the quality factor is in qualtitative agreement with a theory by Jenson et al.

• Research Organization: Serin Physics Laboratory, Rutgers University, Piscataway, New Jersey
• OSTI ID: 6761197
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 55:3; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BCS THEORY
CHALCOGENIDES
COHERENCE LENGTH
DATA
DENSITY
DIMENSIONS
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FOURTH SOUND
GINZBURG-LANDAU THEORY
GINZBURG-PITAEVSKII THEORY
HELIUM 3
HELIUM ISOTOPES
INFORMATION
ISOTOPES
LENGTH
LIGHT NUCLEI
MATERIALS
MEDIUM PRESSURE
NUCLEI
NUMERICAL DATA
ORDER PARAMETERS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POROUS MATERIALS
POWDERS
PRESSURE DEPENDENCE
STABLE ISOTOPES
SUPERFLUIDITY
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
ULTRALOW TEMPERATURE