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Title:
Cosmic-ray-induced photodissociation and photoionization rates of interstellar molecules
Authors:
Gredel, R.; Lepp, S.; Dalgarno, A.; Herbst, E.
Affiliation:
AA(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA), AB(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA), AC(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA), AD(Duke University, Durham, NC)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 347, Dec. 1, 1989, p. 289-293. (ApJ Homepage)
Publication Date:
12/1989
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Cosmic Rays, Interstellar Matter, Photodissociation, Photoionization, Electron Impact, Emission Spectra, Hydrogen, Molecules, Ultraviolet Radiation
DOI:
10.1086/168117
Bibliographic Code:
1989ApJ...347..289G

Abstract

In the Prasad-Tarafdar mechanism, ultraviolet photons are created in the interior of dense interstellar clouds by the impact excitation of molecular hydrogen by secondary electrons generated by cosmic-ray ionization. Detailed calculations of the emission spectrum are described, and the resulting photodissociation and photoionization rates of a wide range of interstellar molecules are calculated.

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