Photodissociation cross sections of HeH+

Details Photodissociation cross sections of HeH+ Photodissociation cross sections of HeH+

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21348607m&link_type=abstract

American Astronomical Society, AAS Meeting #213, #486.07; Bulletin of the American Astronomical Society, Vol. 41, p.459

Astronomy and Astrophysics

Astronomy

Scientific paper

Accurate photodissociation cross sections have been obtained for the A'\Sigma+ - X'\Sigma+ transition of HeH+ using ab initio potential curves and diople transition moments. The partial cross sections have been evaluated for all rotational transitions from the vibrational levels v"=0-11 and over the entire accessible wavelength range 100-1200 Angstrom. Assuming a Boltzmann distribution of the rovibrational levels of the X'\Sigma+, LTE photodissociation cross sections are presented for temperatures between 1000 and 12,000K. The resulting cross sections are applicable to the destruction of HeH+ in the early Universe and UV irradiated molecular regions.
This work was supported by NSF Grant AST-0607733.

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