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The quenching of Pb(6p 2 1 D 2) atoms in collisions with molecules
Authors:P. A. Bokhan  Dm. E. Zakrevskii  V. A. Kim  N. V. Fateev  N. A. Yudin
Affiliation:(1) Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 13, Novosibirsk, 630090, Russia
Abstract:The collisions of metastable Pb(6p 2 1 D 2) atoms with various molecules were studied by the diagnostics of radiation from a hollow cathode lamp and a laser on lead vapor. Experiments were performed for a gas flow of lead atoms with argon. The Pb(6p 2 1 D 2) states were excited in a gas discharge in the presence of reagent gas molecules. The absolute rate constants for the quenching and chemical reactions of lead atoms in the ground and excited states were determined. The quantum efficiency of chemical reactions was close to one for the N2O, CH2Cl2, SF6, and CuBr molecules. Long-lived chemical compounds were formed in these reactions.
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