Trapping of rare gases during the condensation of solids

Details Trapping of rare gases during the condensation of solids Trapping of rare gases during the condensation of solids

May 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979e%26psl..43..197h&link_type=abstract

Earth and Planetary Science Letters, vol. 43, no. 2, May 1979, p. 197-200.

Computer Science

3

Chondrites, Crystallization, Meteoritic Composition, Rare Gases, Trapping, Argon, Electron Microscopy, High Temperature, Mass Spectroscopy, X Ray Spectroscopy, Rare Gases, Temperatures, Condensation, Crystals, Crystallization, Vapor, Phases, Gas Inclusions, Argon, Pressure, Chondrites, Meteorites, Hypotheses, Origin, Samples, Experimental Studies, X-Ray Diffraction, Electron Probes, Mass Spectrometers

Scientific paper

The trapping of Ar during the crystallization of CdTe, Zn, Mg and Fe3O4 from vapor phases was studied by X-ray diffraction spectrometry, mass spectrometry, and electron microscopy. A linear correlation was found between the amount of Ar trapped and the ambient Ar pressure. The amount of trapped Ar was of a similar order of magnitude to that found in the high-temperature solubility, and the trapping of rare gas during the crystallization process from the vapor phase may be essentially similar to high temperature solubility in which Henry's Law is generally observed. Stepheating degassing of the samples indicated that Ar was rather loosely trapped. However, the retention of Ar was enhanced by simple mechanical compaction. These results suggest that rare gases loosely trapped by dust particles during crystallization may be more tightly bound during the subsequent formation of meteoritic parent bodies.

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