Abstract
Atomic fluorescence of Pb excited by the intense radiation of a tunable dye laser has been theoretically and experimentally studied. The accumulation of atoms at the metastable level has been shown to be significant. The existence of an optimal (for maximum analytical sensitivity) time duration of the laser pulse was shown theoretically. It was established experimentally that about 40% of the total number of Pb atoms are transferred on to the metastable level within a 5-ns, 10-kW/cm 2 laser pulse. This result agrees well with the calculations based on the three-level approximation for Pb atomic fluorescence.
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