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- W1972125041 abstract "Abstract Collisional quenching and excitation transfer between the oxygen atom 3p 3P and 5P states have been investigated in a discharge flow apparatus with O2 and N2 collisional partners. The 3P state was excited by two-photon excitation at 225.6 nm from the 2p43P ground state, and temporal profiles of the 3P←3S and 5P← 5S emission at 844.7 and 777.5 nm, respectively, to the lower 3s manifold were recorded. From an analysis of 3P decay curves as a function of quencher pressure, bimolecular rate constants for the removal of the 3P state were determined: k3Q(O2) = (7.8±0.8) × 10−10 and k3Q(N2)= (5.87±0.15)× 10−10 molecule−1 cm3 s−1. The intercept of the O2 Stern-Volmer plot yielded k3r = (2.98± 0.15)×10 7 s−1 for the 3P radiative decay rate. The collisional quenching rate constant for the 5P state by O2 was obtained by analysis of 5P decay curves: k5Q(O2)= (10.8±1.8)× 10−10 molecule−1 cm3 s−1. Rate constants k35 for 3P← 5P excitation transfer were obtained from the ratio of the 5P←5S to 3P← 3S emission intensities as a function of quencher pressure: k35 (O2) ≈ 6× 10−11 and k35 (N2)≈2 ×10 −11 molecule−1 cm3 s−1." @default.
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- W1972125041 date "1988-07-01" @default.
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- W1972125041 title "Collisional transfer between and quenching of the 3p 3P and 5P states of the oxygen atom" @default.
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- W1972125041 doi "https://doi.org/10.1016/0009-2614(88)87276-2" @default.
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