Comment on 'A non-mass-dependent isotopic fractionation effect' by F. Robert, J. Halbout and J. Baudon

Details Comment on 'A non-mass-dependent isotopic fractionation effect' by F. Robert, J. Halbout and J. Baudon Comment on 'A non-mass-dependent isotopic fractionation effect' by F. Robert, J. Halbout and J. Baudon

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990e%26psl..98..390s&link_type=abstract

Earth and Planetary Science Letters (ISSN 0012-821X), vol. 98, no. 3-4, June 1990, p. 390-401; Reply, p. 402-404.

Physics

1

Fractionation, Isotope Effect, Oxygen Isotopes, Planetary Evolution, Kinetic Energy, Quantum Mechanics, Solar System, Vapor Phases

Scientific paper

The fractionation model of Robert et al. (1988) treats the gas-phase isotopic exchange reaction between kinetically excited atoms aX and diatomic MbX yielding bX and MaX and finds an abundance-dependent fractionation superimposed on the usual mass dependent fractionation. This paper shows that the treatment of Robert et al. is in error and presents a more straightforward treatment of the same system. This model shows only mass-dependent fractionation.

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