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Issue 13, 2014
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Near-threshold photodissociation dynamics of CHCl3

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Abstract

Energy- and angle-resolved photofragment distributions for ground-state Cl (2P3/2) and spin–orbit excited Cl* (2P1/2) have been recorded using the velocity map imaging technique after photodissociation of chloroform at wavelengths of 193 and ∼235 nm. Translational energy distributions are rather broad and peak between 0.6 and 1.0 eV. The spin–orbit branching ratios [Cl*]/[Cl] are 1 and 0.3 at 193 and 235 nm, respectively, indicating the involvement of two or more excited state surfaces. Considering the anisotropy parameters and branching ratios collectively, we conclude that the reaction at 193 nm takes place predominantly on the 1Q1 surface, while the 3Q1 surface gains importance at lower dissociation energies around 235 nm.

Graphical abstract: Near-threshold photodissociation dynamics of CHCl3

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Article information


Submitted
19 Dec 2013
Accepted
27 Jan 2014
First published
27 Jan 2014

Phys. Chem. Chem. Phys., 2014,16, 6068-6074
Article type
Paper
Author version available

Near-threshold photodissociation dynamics of CHCl3

M. Reid, V. Green and S. P. K. Koehler, Phys. Chem. Chem. Phys., 2014, 16, 6068
DOI: 10.1039/C3CP55348E

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