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(ˌfoʊ toʊ dɪˌsoʊ siˈeɪ ʃən, -ʃi-)

the dissociation of a chemical compound by radiant energy.
References in periodicals archive ?
Furthermore, we will work with femto/picosecond lasers for investigating the diagnostic applicability of filamentation, new aspects of non-linear techniques, and diagnostic aspects of photodissociation phenomena.
It considers laser propagation safety and explains standard test material preparation for standoff optical-based detection system evaluation; explores explosives detection using deep ultraviolet native fluorescence, Raman spectroscopy, laser-induced breakdown spectroscopy, reflectometry, and hyperspectral imaging; examines photodissociation followed by laser-induced fluorescence, photothermal methods, cavity-enhanced absorption spectrometry, and short-pulse laser-based techniques; and describes the detection and recognition of explosives using terahertz-frequency spectroscopic techniques.
The reaction products were then characterized by infrared photodissociation spectroscopy and mass spectrometry.
2) Water vapour may be increased at times by this mechanism but as water vapour is at a higher concentration during northern summer months, it appears that water vapour formation may more than compensate for that lost by photodissociation.
Radicals R are produced by photodissociation of the initator DMPA.
An ethynyl radical is produced in Titan's atmosphere by the photodissociation of acetylene by ultraviolet light.