Laser-Excited Fluorescence of Diatomic Lead in a Glow Discharge Source

摘要

Glow discharge sources provide simple and convenient means for laser excited atomic spectroscopic studies of atoms sputtered from the cathode material. Presence of molecular species was observed in the course of investigation on this source as an atom cell for the laser-excited atomic fluorescence spectroscopic studies of lead. Spectral studies revealed characteristic band spectra, indicating the presence of molecular species in the discharge. The spectra were identified as belonging to the lead dimer species (diatomic lead molecule). It is therefore, essential to examine the presence and possibility of interferences from molecular species while using flow discharge sources as atomization cells in atomic spectroscopic applications. (reprints).