Abstract
The technique of photofragment imaging is described, and several examples of the power of the technique are presented. Two‐dimensional images of state‐selected photofragments from the photodissociations of CD3I and H2S illustrate how photofragment imaging reveals β parameters, brancing ratios, Doppler profiles and vector correlations. Comparisons are made with Doppler profiling and one‐dimensional time‐of‐flight techniques.
Highlights
Photodissociation is one of the simplest laser-induced chemical processes
Laser photodissociation has been studied for many years because it is a way to initiate a unimolecular reaction with some control t Research sponsored by the US Department of Energy, Office of Basic Energy
We describe a two-dimensional imaging technique wherein photofragments are tagged by resonance-enhanced multiphoton ionization (REMPI) and imaged onto a two-dimensional, position-sensitive detector
Summary
Photodissociation is one of the simplest laser-induced chemical processes. Laser photodissociation has been studied for many years because it is a way to initiate a unimolecular reaction with some control t Research sponsored by the US Department of Energy, Office of Basic EnergySciences, Division of Chemical Sciences.over the starting conditions. We place the detector parallel to the symmetry axis of the dissociation and use a numerical inversion technique[17] to reconstruct the three dimensional velocity distribution of the photofragments.
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