Efficiency of laser excitation of PO-photofragments of organophosphates
S.M. Bobrovnikov, E.V. Gorlov, V.I. Zharkov
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
Keywords: organophosphate, laser fragmentation, absorption spectrum, phosphorus oxide, laser excitation, thermalization
Abstract
The results of calculation of the absorption spectrum of phosphorus oxide (PO) corresponding to the transition A 2S+ ( v′ = 0) - X 2P ( v″ = 0) are presented. The calculation is performed taking into account the perturbation of the v′ = 0 level of the A 2S+ state by the v′ = 4 level of the b4S- state. The efficiency of laser excitation of PO molecules is estimated as a function of the spectral parameters of the radiation. The time dependence of the efficiency of the excitation of PO fragments was calculated in the real atmosphere under two-pulse laser fragmentation of organophosphates for specified spectral line widths Δλ and center positions λ0.
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