On the 31Πu state in caesium dimer

Polarisation labelling spectroscopy technique was employed to study the 3 state of Cs2 molecule. The main equlibrium constants are cm−1 and Å. Vibrational levels of the 3 state were found to be subject to strong perturbations by the neighbouring electronic states. Energies of 3352 rovibronic levels of the perturbed complex were determined.