Abstract
The photodissociation dynamics of nitromethane (CH3NO2), following photoabsorption at 213nm in the π∗←π transition, has been studied using ion-imaging. The state-resolved velocity and angular distributions were measured for the CH3, NO, and O atom fragments. The CH3 velocity distribution consisted of two peaks with different angular distributions; the slow and fast components showed isotropic and anisotropic distributions, respectively. The NO and O fragments also showed slow components with isotropic angular distributions. The results observed consistently indicate that these slow photofragments were possibly produced by the concerted three-body dissociation channel.
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