Knowledge Bank

Rotationally resolved electronic spectra of NeOH have been recorded in a free jet expansion from a slit nozzle. The cluster is formed in a He/Ne expansion after photolysis of the precursor, $HNO3$, with an ArF excimer laser and then probed downstream. The probe laser system is an $Ar+$ pumped ring dye laser, which is fed into an exclmer pumped pulsed amplifier. The pulse amplified output is then frequency doubled in a KDP crystal that is angle tuned for maximum conversion efficiency. The total fluorescence is collected and imaged through optical slits onto a photomultiplier. Analysis of the spectra is in progress and will also be discussed