Collisional Excitation of Interstellar Cyclopropenylidene
Abstract
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.
- Publication:
-
The Astrophysical Journal Supplement Series
- Pub Date:
- September 1987
- DOI:
- 10.1086/191222
- Bibcode:
- 1987ApJS...65..175G
- Keywords:
-
- Atomic Collisions;
- Cyclic Hydrocarbons;
- Helium Atoms;
- Interstellar Chemistry;
- Molecular Excitation;
- Molecular Rotation;
- Molecular Collisions;
- Self Consistent Fields;
- Astrophysics;
- INTERSTELLAR: MOLECULES;
- MOLECULAR PROCESSES