FRANCK-CONDON FACTORS FOR THE B-X SYSTEM OF S2

A frequency-doubled tunable dye laser has been used to selectively excite individual rotational levels within the vibrational levels υ′ = 2, and 6-9, of the B 3Σu- state of S 2. Measurements of the intensity in emission of all the (υ′,υ″) bands permit determination of the absolute Franck-Condon factors 9ν′ν″. Combined with previous studies, this work completes the set of qν′ν″ for bound-bound transitions within the B-X system. A simple pictorial representation of the Franck-Condon factors is presented, and conclusions may be drawn concerning overlap with the B-state wave functions above the predissociation limit. © 1979 American Institute of Physics.