Characterization of bound parts of the b30u+(53P1), c31u(53P2) and X10g+ states of Cd2 revisited: bound-bound excitation and dispersed emission spectra

Laser-induced fluorescence excitation and dispersed emission spectra of Cd2 recorded using the c31u(53P2)←X10g+ and b30u+(53P1)→X10g+ transitions, respectively are reported. In the excitation to the c31u state, red-shaded vibrational components of several υ′←υ″=0,1,2,3 progressions and Δυ=0,1 sequences were identified. In the emission from the b30u+ state, well resolved υ′=0,1,2,3,4→υ″ transitions were recorded using a spectrograph with CCD camera. Analyses of the spectra provided an improved characterization of the b30u+, c31u and X10g+ states involved in the transitions. The results were compared with our ab initio calculations and those obtained experimentally in earlier studies.