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- W2079273131 abstract "PbF radicals were produced in a fast-flow system by reaction of lead vapour with molecular fluorine. The ground state molecules were excited to selected vibrational levels of the A 3∑+ state by absorption of pulsed dye laser radiation in the wavelength range 400–450 nm. Radiative and collisional deactivation of the A state was found to efficiently populate the upper spin-orbit component X2 2Π32 of the ground state. Time-resolved measurements of the fluorescence of the A 2∑+ → X1 2Π12, A 3∑+ → X2 2Π32 and X2 2∑32 → X1 2Π12 transitions allowed the determination of the radiative lifetimes of the A 2∑+, ν=0, 1 and X2 2Π32, ν=0 state (τ(A, ν=0, 1)=5.0±0.3 μs, τ(X2, ν=0)=370±40 μs), of the transition probabilities of the A → X1, A → X2 and X2 → X1 transitions, and of the rate constants and channels of quenching of the A, ν=0 and X2, ν=0 states by He, Ar, N2, CO, H2, D2, O2, CO2, and SF6. In addition, information about the vibrational relaxation in the A 2∑+ state was obtained." @default.
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- W2079273131 date "1992-09-01" @default.
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- W2079273131 title "Radiative lifetime and quenching of the A 2∑+ and X2 2Π32 states of PbF" @default.
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- W2079273131 doi "https://doi.org/10.1016/0301-0104(92)87056-f" @default.
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