Photodissociation cross sections and rates for CH/+/ in interstellar clouds

Details Photodissociation cross sections and rates for CH/+/ in interstellar clouds Photodissociation cross sections and rates for CH/+/ in interstellar clouds

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...239..855k&link_type=abstract

Astrophysical Journal, Part 1, vol. 239, Aug. 1, 1980, p. 855-858. USAF-supported research.

Astronomy and Astrophysics

Astrophysics

18

Interstellar Chemistry, Interstellar Gas, Molecular Ions, Photodissociation, Transition Probabilities, Configuration Interaction, Cross Sections, Gas Dissociation

Scientific paper

Photodissociation cross sections have been calculated for transitions arising from the ground state of CH(+) to three excited states of 1Sigma(+) symmetry accessible with photon energies not greater than 13.6 eV. Two of these dissociation channels have large cross sections and are therefore particularly relevant to the destruction of CH(+) in the interstellar medium. Photodissociation rates in the interstellar radiation field for transitions into these three states are presented as a function of optical depth. In the unattenuated interstellar field these rates are several orders of magnitude larger than the photodissociation rate through the A 1Pi state.

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