Abstract
Excited-state laser spectroscopy of Zn2 has been the subject of several recent investigations in this laboratory1,2 and elsewhere.3,4 We now report fluorescence and excitation spectra arising from vibronic transitions between the 3πu (43P,43P) and 3πg-(43P, 41S) states of the Zn2 excimer whose partial PE diagram1,2 is shown in Fig. 1. The spectra were excited in a sealed quartz cell containing Zn vapor at a pressure of 38 Torr (673°C). The vapor was irradiated with a series of successive collinear pump and probe dye-laser pulses. The pump pulses (307.7 nm) produced a population of Zn 43P1, atoms whose collisions with ground-state atoms led to the formation of Zn2 excimers in the 3πg(43P, 41S0) state. The probe pulses (270-287 nm), delayed by about 200 ns, excited vibrational levels of the 3πu(43P, 43P) excimer state whose decay to the
© 1993 Optical Society of America
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