Photodissociative Absorption by H2+ in the Solar Photosphere

Details Photodissociative Absorption by H2+ in the Solar Photosphere Photodissociative Absorption by H2+ in the Solar Photosphere

May 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000arep...44..338l&link_type=abstract

Astronomy Reports, Volume 44, Issue 5, May 2000, pp.338-347

Astronomy and Astrophysics

Astronomy

5

Scientific paper

Photoabsorption by systems of hydrogen atoms and protons in the solar photosphere is studied. Analytical formulas for the partial cross sections for photodissociation of the H 2 + molecular ion are derived for the cases of fixed vibrational-rotational energy levels and averaging over a Boltzmann distribution for a given temperature. The photoabsorption coefficients for bound-free and free-free transitions of H-H+ in the solar photosphere are calculated. These are compared with the absorption coefficients for photo-ejection of an electron from a negative hydrogen ion H- and free-free transitions of an electron in the field of a hydrogen atom H. Results can be applied to the Sun and hotter stars.

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