1. Coherent interference in the resonant dissociative electron attachment to carbon monoxide.
- Author
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Shan Xi Tian, Bin Wu, Lei Xia, Yong-Feng Wang, Hong-Kai Li, Xian-Jin Zeng, Yi Luo, and Jinlong Yang
- Subjects
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ELECTRONS , *CARBON monoxide , *ANGULAR distribution (Nuclear physics) , *QUANTUM interference , *QUANTUM coherence , *PHYSICS experiments , *SCATTERING (Physics) - Abstract
Dissociative electron attachment to carbon monoxide, e- + CO → C + O-, at 9.5, 10.0, and 10.6 eV is investigated by using the anion velocity time-sliced map imaging technique. The completely backward scattering distributions of the fast O- fragment are observed at 10.0 and 10.6 eV. The single electron-molecule resonance model fails in interpretation to these unusual angular distributions, while a quantum interference model including two (at 10.0 eV) or three (at 10.6 eV) dissociative outgoing waves is consequently proposed and provides the satisfying results about the experimental data fittings. Moreover, coherent interference among the ²Π, ²Δ, and ²ɸ resonant states of CO- at 10.6 eV could be further established, based on the fact that the sum of the phase-shift fitting values equals π rad. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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