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Dynamics of electron photodetachment from an aqueous halide ion

✍ Scribed by Wen-Shyan Sheu; Peter J. Rossky

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
483 KB
Volume
213
Category
Article
ISSN
0009-2614

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✦ Synopsis

The dynamics following two-photon excitation of an aqueous halide ion are studied via quantum simulation. Two channels for photodetachment are observed: a direct detachment via a very early time non-adiabatic transition and a delayed adiabatic detachment from the lowest-lying charge-transfer-to-solvent state. Fast, non-diffusive, geminate recombination of electron-halogen contact pairs arising in the latter case dominates the kinetics of deactivation of excited state ions. Calculated transient emission spectra show a distinct signature for the adiabatic detachment.

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