Comment on “Experimental Test of Self-Shielding in Vacuum Ultraviolet Photodissociation of CO”-Reference-Cited by-同舟云学术

Comment on “Experimental Test of Self-Shielding in Vacuum Ultraviolet Photodissociation of CO”

Published:2009-06-19 Issue:5934 Volume:324 Page:1516-1516
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Lyons James R.¹,Lewis Roy S.²,Clayton Robert N.³

Affiliation:

1. Institute of Geophysics and Planetary Physics, University of California, Los Angeles, Los Angeles, CA 90095, USA.

2. Enrico Fermi Institute and Chicago Center for Cosmochemistry, University of Chicago, Chicago, IL 60637, USA.

3. Enrico Fermi Institute and Departments of Chemistry and Geophysical Sciences, University of Chicago, Chicago, IL 60637, USA.

Abstract

Chakraborty et al . (Reports, 5 September 2008, p. 1328) demonstrated very large, wavelength-dependent mass-independent isotopic effects during carbon monoxide (CO) photodissociation and argued that self-shielding in CO was not responsible. We suggest that variations in band oscillator strengths and linewidths among CO isotopologs are responsible for most of the wavelength dependence observed and that the reported experiments confirm the importance of self-shielding during CO photodissociation.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference10 articles.

1. Experimental Test of Self-Shielding in Vacuum Ultraviolet Photodissociation of CO

2. Self-shielding in the solar nebula

3. Molecular Cloud Origin for the Oxygen Isotope Heterogeneity in the Solar System

4. CO self-shielding as the origin of oxygen isotope anomalies in the early solar nebula

5. A Component of Primitive Nuclear Composition in Carbonaceous Meteorites

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