Abstract
Tunable, coherent, and monochromatic radiation, generated by four-wave sum-mixing in Hg vapor1 was used to investigate spectra of Ar2 in the region 104 - 108 nm. Argon dimers were formed by pulsed supersonic expansion, and rovibronic transitions were detected by fluorescence emission2 and by photo-ionization. A comprehensive study of high-resolution spectra, corresponding to transitions from the van der Waals ground state to the three lowest excimer states was carried out, resulting in new information on spectroscopic constants.
© 1986 Optical Society of America
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