Laser spectroscopy of some high-lying HgZn spin—orbit states

Pump and probe methods of laser spectroscopy were employed to excite several high-lying spin—orbit states of the HgZn exciplex. Their decays to lower bound vibronic states produced fluorescence spectra which were recorded with a monochromator in the region 4100–5200 A, and scans of the probe dye laser produced the corresponding excitation spectra. Six new spectra were recorded and analyzed, yielding molecular constants for the various states. The new data, together with a more recent version of the PE diagram, also led to improved assignments of some previously reported spectra.