Table of Contents
Laser Chemistry
Volume 9, Issue 4-6, Pages 277-288

Reactive Scattering of Oxygen Atoms With Iodine Molecules

Chemistry Department, University of Manchester, Manchester M13 9PL, UK

Received 20 May 1988

Copyright © 1988 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Reactive scattering of O atoms with I2 molecules has been studied at an initial translational energy E~43 kJ mol−1 using cross-correlation time-of-flight analysis with resolution improved overprevious measurements. The broad centre-of-mass differential cross section favours the backward hemisphere with a product translational energy distribution lying above the distribution observed at lower initial translational energy but below the microcannonical RRHO distribution. However, a minor component with very low product translational energy favours the forward hemisphere. The observed scattering is attributed to a strongly bent OII triplet complex intermediate with a lifetime shorter than the period of overall rotation of the axis of the heavy II diatomic but long compared with the period of vibrational and rotational motion of the light O atom.