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- W1968186722 abstract "The CL spectra of the title reactions and their pressure dependences have been studied over the 5 × 10−6 − 5 × 10−3 torr range in a beam-gas experiment. In the Sm + N2O, O3 and Yb + O3 reactions simple bimolecular formation of the short lived (radiative lifetime τR < 3 × 10−6 s) MO* emitters dominates the entire pressure range. In the other systems Sm + (F2, Cl2), Yb + (F2, Cl2) the CL spectra are strongly pressure dependent, indicating extensive energy transfer from long-lived intermediates. Reaction mechanisms are suggested. The quantum yields Φ, obtained by calibrating relative quantum yields with Dickson and Zare's absolute value for Sm + N2O [Chem. Phys. 7 (1975) 367], range from Φ = 2.3% (for Sm + F2, the most efficient reaction) down to Φ = 0.005% for Yb + Cl2. The following lower limit estimates were obtained for the product dissociation energies from the short wavelength CL cutoffs: D00(SmF) ⩾ 121.3 ± 2.4 kcal/mole, D00(SmCl) ⩾ ⩾ 100 ± 3 kcal/mole, D00(YbO) ⩾ 94.2 ± 1.5 kcal/moie, D00(YbF) ⩾ 123.7 ± 2.3 kcal/mole." @default.
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- W1968186722 date "1976-06-01" @default.
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- W1968186722 title "Molecular beam chemiluminescence. VIII: Pressure dependence and kinetics of Sm + (N2O, O3, F2, Cl2) and Yb + (O3, F2, Cl2) reaction. Dissociation energies of the diatomic reaction products" @default.
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- W1968186722 doi "https://doi.org/10.1016/0301-0104(76)80140-1" @default.
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