Physics
Scientific paper
Jun 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989gecoa..53.1421w&link_type=abstract
Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 53, June 1989, p. 1421-1433.
Physics
14
Fractionation, Meteoritic Composition, Rare Gases, Sorption, Carbon, Chondrites, Mass Spectroscopy, Pressure Dependence, Temperature Dependence, Meteorites, Simulations, Rare Gases, Neon, Argon, Krypton, Adsorption, Xenon, Fractionation, Absorption, Trapping, Experiments, Carbon, Origin, Laboratory Studies, Procedure, Diagrams, Mass Spectrometry, Temperature, Pressure, Composition, Parameters, Isotopes, Comparisons, Formation, Concentration, Models, Diffusion, Ureilites
Scientific paper
The sorption of Ne, Ar, Kr, and Xe was studied in carbon black, acridine carbon, and diamond in an attempt to understand the origin of trapped noble gases in meteorites. The results support a model in which gases are physically adsorbed on interior surfaces formed by a pore labyrinth within amorphous carbons. The data show that: (1) the adsorption/desorption times are controlled by choke points that restrict the movement of noble gas atoms within the pore labyrinth, and (2) the physical adsorption controls the temperature behavior and elemental fractionation patterns.
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