Rotational excitation of molecular ions by electron impact under interstellar conditions

Details Rotational excitation of molecular ions by electron impact under interstellar conditions Rotational excitation of molecular ions by electron impact under interstellar conditions

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...247..936b&link_type=abstract

Astrophysical Journal, Part 1, vol. 247, Aug. 1, 1981, p. 936-940.

Astronomy and Astrophysics

Astrophysics

10

Electron Impact, Interstellar Gas, Molecular Excitation, Molecular Rotation, Particle Interactions, Perturbation Theory, Collision Rates, Electric Dipoles, Particle Collisions

Scientific paper

A generalized expression for the rate coefficient for rotational excitation of molecular ions by electron impact under interstellar conditions has been obtained from the first order perturbation theory. The expression has been obtained by considering only the electron-dipole term of the interaction potential which is the most dominant term. The effect of short range and electron-quadrupole interactions has been assessed. The importance of electron-ion collisions in relation to H2-ion collisions in the interpretation of the spectral data obtained for ions from interstellar sources has also been assessed.

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