Rotational excitation of HCO(+) by collisions with H2

Details Rotational excitation of HCO(+) by collisions with H2 Rotational excitation of HCO(+) by collisions with H2

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.214..419m&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 214, June 1, 1985, p. 419-427.

Astronomy and Astrophysics

Astronomy

74

Configuration Interaction, Formyl Ions, Hydrogen, Interstellar Matter, Ionic Collisions, Molecular Excitation, Collision Parameters, Collision Rates, Cross Sections, Line Spectra, Molecular Rotation, Positive Ions

Scientific paper

An ab initio potential surface was obtained for the HCO(+)-H2 interaction, using Configuration Interaction for part of the surface. The computed potential surface was used to calculate the collisional cross-sections and rate coefficients for a range of temperatures (0-30 K) and between all rotational levels up to and including j = 4. Only collisions with para-H2 were treated, but the surface may easily be extended to include the terms required for collisions with ortho-H2. The effects of different sets of rate coefficients on predicted spectral line intensities were examined.

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