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Chlorine isotope enrichment in CO2 TEA laser photolysis of CF2Cl2

✍ Scribed by R.E. Huie; J.T. Herron; W. Braun; W. Tsang

Publisher: Elsevier Science
Year: 1978
Tongue: English
Weight: 376 KB
Volume: 56
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(78)80219-x

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✦ Synopsis

A number of lines from a CO2 TEA laser were used to photolyze CF2C12. Enrichment of the 35C1 and "Cl isotopes in the molecular chlorine formed durmg the photolysis was observed using a mass spectrometer. Maximum enrichment was about 1.8. The dependence of enrichment on wavelength, reactant concentration, inert gas pressure, and the presence of SiF4 1s reported. Of particular interest is the persistence of significant enrichment at pressures up to several hundred torr (== lo5 Pa). Aside from the practical significance of this enrichment at hi& pressures, it suggests &at there are important contributions From isotopically specific interactions after the laser pulse.

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