Collisional excitation of interstellar cyclopropenylidene

Details Collisional excitation of interstellar cyclopropenylidene Collisional excitation of interstellar cyclopropenylidene

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apjs...65..175g&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 65, Sept. 1987, p. 175-191.

Astronomy and Astrophysics

Astrophysics

10

Atomic Collisions, Cyclic Hydrocarbons, Helium Atoms, Interstellar Chemistry, Molecular Excitation, Molecular Rotation, Molecular Collisions, Self Consistent Fields

Scientific paper

Theoretical rotational excitation rates were computed for C3H2 in collisions with He atoms at temperatures from 30 to 120K. The intermolecular forces were obtained from accurate self-consistent field and perturbation theory calculations, and collision dynamics were treated within the infinite-order sudden approximation. The accuracy of the latter was examined by comparing with the more exact coupled states approximation.

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