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Photodissociation of NO2 in the (2)B-2(2) state: A slice imaging study and reinterpretation of previous results

Wilkinson, I. and Whitaker, B.J. (2008) Photodissociation of NO2 in the (2)B-2(2) state: A slice imaging study and reinterpretation of previous results. Journal of Chemical Physics, 129 (15). p. 154312.


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The photodissociation dynamics of nitrogen dioxide have been probed above the second dissociation limit at photolysis wavelengths close to 226 nm. The O(3PJ)+NO(2) product channel has been examined using direct current slice velocity map imaging of the O(3PJ) and NO(2) fragments. Mass-resolved resonantly enhanced multiphoton ionization spectroscopy and velocity map imaging have been used to probe directly the rovibrational population distributions of the NO fragments. We also examine possible interference from the dissociation of N2O4 by investigating the effect of the sample temperature on the O(3PJ) fragment energy distributions. The O(3PJ)+NO(2) dissociation channel has been found to favor the production of vibrationally cold, highly rotationally excited NO(2) products with all three oxygen spin-orbit components. Other minor dissociation channels which produce O(3PJ) atoms have also been identified. We discuss the significance of these dissociation channels and present a reinterpretation of previous studies of NO2 dissociation on excitation to the (2)2B2 state.

Item Type: Article
Copyright, Publisher and Additional Information: © 2008 American Institute of Physics. This is an author produced version of a paper published in the Journal of Chemical Physics. Uploaded in accordance with the publisher's self archiving policy.
Institution: The University of Leeds
Academic Units: The University of Leeds > Faculty of Maths and Physical Sciences (Leeds) > School of Chemistry (Leeds)
Depositing User: Sherpa Assistant
Date Deposited: 21 Nov 2008 16:42
Last Modified: 08 Feb 2013 16:57
Published Version: http://dx.doi.org/10.1063/1.2994735
Status: Published
Publisher: American Institute of Physics
Identification Number: 10.1063/1.2994735
URI: http://eprints.whiterose.ac.uk/id/eprint/4931

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