Dissociative attachment and a resonance near an excitation threshold
- 1 April 1972
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 5 (4) , 790-809
- https://doi.org/10.1088/0022-3700/5/4/014
Abstract
Two similar theories of dissociative attachment have recently been criticized for giving an incomplete treatment of a crossing of the potential curves of a negative ion and a neutral molecule. (At such a crossing, an electronic resonance moves past an excitation threshold.) In particular, some authors have suggested that non- adiabatic effects are crucial at such a crossing. A crossing is analysed in a model sufficiently simple for the energy curves to be calculated. It is shown that non-adiabatic effects are not important in the model, and that the curve crossing has no connection with the Landau-Zener problem. The conclusion is that no modification of the original theories is needed to meet the criticisms.Keywords
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