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(ˌfoʊ toʊ dɪˌsoʊ siˈeɪ ʃən, -ʃi-)

the dissociation of a chemical compound by radiant energy.
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References in periodicals archive ?
Tagirova, "Isentropic thermal instability in atomic surface layers of photodissociation regions," Monthly Notices of the Royal Astronomical Society, vol.
Understanding the structure of the FC factor is also important for interpretation of multiatom photodissociation, predissociation, and reaction dynamics [4-14].
(122) Interstellar molecules are readily destroyed by photodissociation but destruction is balanced by a number of formative processes.
While lower-energy ultraviolet radiation breaks up water molecules -- a process called photodissociation -- ultraviolet rays with more energy (XUV radiation) and X-rays heat the upper atmosphere of a planet, which allows the products of photodissociation, hydrogen and oxygen, to escape.
One of these threats is atomic oxygen (AO), which is formed by photodissociation of molecular oxygen by short wavelength UV radiation.
Based on the photodissociation chemistry of [N.sub.2]O, both the initial amount of [N.sub.2]O seeded and the fraction which is dissociated to NO would determine the signal-to-noise ratios (SNRs) of the resulting grid images.
Terazima, "Dynamics of structure and energy of horse carboxymyoglobin after photodissociation of carbon monoxide," Journal of the American Chemical Society, vol.
It was shown that the reversible photodissociation of Hb-ligand complexes, initiated by erythrocyte irradiation changed the oxyHb and deoxyHb levels, and the conformational transitions in the Hb macromolecules accompanying ligand detachment and addition were responsible for changes in their Raman spectra.
This phenomenon could be attributed to the loss of methoxyl content of lignin in WSF, photodissociation of carbon-carbon bonds, and formation of carbonyl-based chromphoric groups (Michel and Billington 2012, Peng et al.
The selected enthalpy of formation for O atom is largely derived from the photodissociation measurements of [O.sub.2] [right arrow] O([sup.3]P) + O([sup.1]D) by Gibson et al.