Collisionally induced hyperfine-structure transitions of OH.
Abstract
The theory of excitation of the internal structures of OH by electron or heavy-particle impact is formulated within the quantum-mechanical close-coupling approximation, incorporating spin-orbit and hyperfine interactions. In the case of electron impact, explicit Born formulae are derived and the selection rules are discussed for the dipole- and the quadrupole-induced transitions. Numerical results are reported for the electron excitation cross sections of the hyperfine-structure transitions among the lower-lying rotational ladders of two states.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- June 1976
- DOI:
- 10.1086/154422
- Bibcode:
- 1976ApJ...206..640C
- Keywords:
-
- Electron Impact;
- Electron Transitions;
- Hydroxyl Emission;
- Hyperfine Structure;
- Molecular Excitation;
- Scattering Cross Sections;
- Born Approximation;
- Electron Scattering;
- Graphs (Charts);
- Quadrupoles;
- Transition Probabilities;
- Nuclear and High-Energy Physics