Motional states of /sup 3/He and /sup 4/He in the one-dimensional channels of K-L zeolite

Journal Article · Tue Sep 01 04:00:00 EDT 1987 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00682300· OSTI ID:5376361

Kato, H; Ishioh, K; Wada, N; Ito, T; Watanabe, T

The behavior of /sup 3/He and /sup 4/He in a one-dimensional channel (approx.10 A in diameter) of K-L zeolite has been studied by measuring isosteric heat of sorption and heat capacities in the temperature range 0.1-1.5 K as a function of the amount of helium adsorbed. At smaller amounts, below 40% of full channel, the He adatoms seem to be bound on the potential minima of the wall. However, at larger amounts adsorbed, between 40 and 70%, a one-dimensional translation of the excess adatoms over 40% is suggested by the results that the molar heat capacities at T greater than or equal to 1 K are about the magnitude R/2 of a one-dimensional gas and that the heat of sorption at T = 0 K is almost constant.

• Research Organization: Hokkaido Univ. (Japan)
• OSTI ID: 5376361
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 68:5/6; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ADSORPTION
ADSORPTION HEAT
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFUSION
ENTHALPY
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
HELIUM 3
HELIUM 4
HELIUM ISOTOPES
HEXAGONAL LATTICES
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
ISOTOPES
LIGHT NUCLEI
MATERIALS
MINERALS
NUCLEI
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SILICON COMPOUNDS
SILICON OXIDES
SORPTION
SORPTIVE PROPERTIES
SPECIFIC HEAT
STABLE ISOTOPES
SUPERFLUIDITY
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
ULTRALOW TEMPERATURE
VAN DER WAALS FORCES
ZEOLITES