Rovibrationally-Resolved Direct Photodissociation Through The Lyman And Werner Transitions Of H_{2}

Details Rovibrationally-Resolved Direct Photodissociation Through The Lyman And Werner Transitions Of H_{2} Rovibrationally-Resolved Direct Photodissociation Through The Lyman And Werner Transitions Of H_{2}

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aas...21116214g&link_type=abstract

American Astronomical Society, AAS Meeting #211, #162.14

Astronomy and Astrophysics

Astrophysics

Scientific paper

Direct photodissociation cross sections have been obtained for the Lyman and Werner transitions of H2 using a combination of ab initio and experimentally derived potential curves and dipole transition moments. The partial cross sections have been evaluated for transitions from all 301 rovibrational levels (v'',J'') of the ground electronic state and over a wavelength range that extends from 10nm to the dissociation threshold for each particular rovibrational state. For UV-irradiated molecular gas with column densities of 1016-1019cm-2, direct photodissociation can compete with the Solomon process as an H2 destruction process. This research was supported by NASA grant NNG06GJ11G from the Astrophysics Theory Program.

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