I+ decay mechanism and the branching competition between the CF3+ and I+ channels.
| Entry Date(s): |
Date Created: 20001021 Latest Revision: 20191120 |
| Update Code: |
20231215 |
| DOI: |
10.1039/b000439l |
| PMID: |
11040503 |
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| Autor: |
Downie P; School of Chemistry, University of Nottingham, UK., Powis I I |
| Jazyk: |
angličtina |
| Zdroj: |
Faraday discussions [Faraday Discuss] 2000 (115), pp. 103-17; discussion 175-204. |
| DOI: |
10.1039/b000439l |
| Abstrakt: |
Electron-ion recoil vector correlations are examined for the ionization and subsequent dissociation of A state CF3I+. The magnitude of the electron and fragment ion recoil vectors permits the energetics of two alternative decays to I+ and CF3+ to be compared, while differences between the angular correlations are interpreted as molecule-frame photoelectron angular distributions which, in the I+ channel, are smeared by molecular rotation between ionization and dissociation. Quantitative estimates of sub-ps I+ decay lifetimes are extracted, indicating very different decay rates for the alternative dissociation channels. Surprisingly, the ka1 and ke photoelectron continua exchange polarization dependence in the I+ channel correlations and vibronic interactions are postulated in explanation. This can also rationalize the non-adiabatic A CF3I+-->I+ decay mechanism and the branching competition between the CF3+ and I+ channels. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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