Collisional relaxation of electronically excited Pb; 6p2(3P2) and (3P1)

摘要

Time resolved measurements have been made of the room temperature decay of excited electronic states of Pb. The excited atoms were produced by photodecomposition of tetramethyl lead and the concentrations of the excited states were monitored by atomic resonance absorption. Quenching rate constants of the spin orbit states3P2and3P1were obtained for the collision partners Ar, Xe, H2, D2, N2, and O2. These results are discussed in terms of curve crossings, curve merging, chemical reaction, andErarr;Venergy transfer processes. Comparison is made with the quenching rate constants for these states reported by Husain and Littler.