Abstract
The 193-nm ArF pulsed laser photolysis of HNCO, NH, and N2H4 produced NH(a1Δ). Its lifetime was measured as a function of quenching species concentration by LIF using the a1Δ → c1π transition near 325 nm. The rate coefficients for quenching were found to be 7.5 ± 0.6 × 10−14 for N2, 2.9 ± 0.6 × 10−12 for H2, 7.3 ± 1.0 × 10−13 for HF, 6.3 ± 1.0 × 10−13 for F2, 1.62 ± 0.16 × 10−11 for HNCO, 1.10 ± 0.08 × 10−10 for NH3, 1.7 ± 0.2 × 10−10 and <10−15 for He.
© 1986 Optical Society of America
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