Abstract
An experiment involving the optogalvanic effect suitable for the advanced physics laboratory is described. This experiment complements the usual basic experiment in atomic spectroscopy where spectra are recorded on photographic film with a spectrograph or with a monochromator and photomultiplier. The optogalvanic effect used the atoms being studied as the detector and a tunable dye laser as the source. Linewidths observed are those of the dye laser that are considerably smaller than those obtained with the usual laboratory monochromator. The student is introduced to the techniques of spectroscopy with pulsed dye lasers and to a spectrum for which LS coupling does not hold.
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