Photodissociation of MgH in the solar atmosphere

Details Photodissociation of MgH in the solar atmosphere Photodissociation of MgH in the solar atmosphere

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jphb...16.2377d&link_type=abstract

Journal of Physics B - Atomic and Molecular Physics (ISSN 0022-3700), vol. 16, July 14, 1983, p. 2377-2384.

Physics

1

Magnesium Compounds, Photodissociation, Solar Atmosphere, Atmospheric Chemistry, Diatomic Molecules, Electron Transitions, Ground State, Hydrogen Compounds, Ionization Cross Sections, Metal Hydrides

Scientific paper

Cross sections and the rate of photodissociation of the MgH molecule by the X(2)Sigma(+) yields B-prime(2)Sigma(+) transition have been calculated for the conditions of the solar atmosphere. Photodissociation from all the vibrational levels v = 0-7 of the ground X state have been considered and the rotational level has been taken as J = 18, the most probable value at the solar temperature (5780 K). The total cross sections have been obtained by summing over the partial cross sections for each ro-vibrational level of the ground state with an appropriate weighting factor. The calculations have been made over the whole range of wavelengths accessible to the X yields B-prime transition. The photodissociation rate has been calculated from the total cross sections. New features in the photodissociation cross sections of MgH have been obtained which have not been found for simpler diatomic molecules or ions.

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