Electronically excited iodine atoms, I(52P½). Diffusion in noble gases, the mean radiative lifetime and atomic recombination
- 1 January 1972
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics
- Vol. 68, 48-54
- https://doi.org/10.1039/f29726800048
Abstract
Electronically excited iodine atoms, I(52P½), generated by the pulsed irradiation of CF3I, have been monitored by time-resolved emission, I(52P½)→I(52P)+hv(1315 nm). The decay of the excited atoms in noble gases gives rise initially to a first-order kinetic region followed by removal indicative of more complex kinetics. Analysis of the first-order region yields the diffusion coefficients of I(52P½) in the gases He, Ne, Ar and Kr, together with the mean radiative lifetime for the emission. The complete decay curve can be quantitatively described using numerical integration in terms of a model involving quenching of I(52P½) by I2 formed from the recombination of two ground-state atoms.Keywords
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