Low-temperature properties of molecular hydrogen in porous Vycor glass

Thesis/Dissertation · Sat Dec 31 23:00:00 EST 1988

OSTI ID:5188189

Torii, R H

In an attempt to produce superfluid molecular hydrogen, the author has made an experimental study of H{sub 2} in porous Vycor glass. Earlier specific heat experiments have shown that liquid H{sub 2} in 60 {angstrom} diameter Vycor pores supercooled 4 K. He has measured the specific heat from 0.8 K to 20 K of H{sub 2} adsorbed in a series of Vycor samples which had pore diameters in the range 20 {angstrom} to 60 {angstrom}. For pore diameters greater than 30 {angstrom}, the liquid H{sub 2} in the Vycor pores supercooled 4 to 5 K depending on the pore size and the amount of H{sub 2} in the Vycor. For pore diameters less than 30 {angstrom}, he did not observe a freezing transition for H{sub 2} in the Vycor.

• Research Organization: Brown Univ., Providence, RI (United States)
• OSTI ID: 5188189
• Country of Publication: United States
• Language: English

Related Subjects

665420* -- Superfluidity-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ADSORPTION
COOLING
ELEMENTS
EVEN-EVEN NUCLEI
FLUIDS
GLASS
HELIUM 4
HELIUM II
HELIUM ISOTOPES
HYDROGEN
ISOTOPES
LIGHT NUCLEI
MOLECULES
NONMETALS
NUCLEI
PHYSICAL PROPERTIES
QUANTUM FLUIDS
SORPTION
SPECIFIC HEAT
STABLE ISOTOPES
SUPERFLUIDITY
TEMPERATURE RANGE
TEMPERATURE RANGE 0000-0013 K
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE