Behavior of liquid /sup 4/He near the superfluid transition in porous glass

Journal Article · Sun Mar 31 23:00:00 EST 1985 · Chin. Phys.; (United States)

OSTI ID:5401987

Liezhao, CAO

Studies have been made on the fraction of superfluid density rho/sub s//rho near the superfluid transition temperature T/sub c/ for liquid /sup 4/He in porous Vycor glass under different pressures. The average value of superfluid exponent zeta obtained is 0.663 +- 0.055 (rho/sub s//rhoapprox.(1-T/T/sub c/)/sup zeta/), which is consistent with the known experimental results and the current theory about critical phenomena. It is confirmed that the liquid helium in porous Vycor glass is three-dimensional in character. No pressure dependence of rho/sub s//rho is found as that in bulk /sup 4/He. However, the results of this experiment are the same as those for /sup 4/He film adsorbed in porous Vycor glass.

• Research Organization: (Deparment of Physics, University of Science and Technology of China, Hefei)
• OSTI ID: 5401987
• Journal Information: Chin. Phys.; (United States), Journal Name: Chin. Phys.; (United States) Vol. 5:2; ISSN CHPHD
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DENSITY
EVEN-EVEN NUCLEI
FLUIDS
GLASS
HELIUM 4
HELIUM II
HELIUM ISOTOPES
ISOTOPES
LAMBDA POINT
LIGHT NUCLEI
NUCLEI
PHYSICAL PROPERTIES
PRESSURE EFFECTS
QUANTUM FLUIDS
STABLE ISOTOPES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
VYCOR