Emission spectroscopy from Rydberg states in van der Waals molecules

Numerous of low – lying electronic states of diatomic molecules are unreachable from the ground state due to selection rules, low Franck-Condon factors or/and low values of transition dipole moment. A method for exploring those molecular potentials could be emission from Rydberg states. Moreover, bound – free emission could be a valuable source of information about repulsive part of the potential that is hard to obtain from the excitation spectra. I will talk about a mothod for exciting ZnAr and CdAr van der Waals molecules to Rydberg states and show simulation of multichannel emission spectra based on ab – initio calculated [1,2] interatomic potentials.

References:

[1] M. Krośnicki, A. Kędziorski, T. Urbańczyk, J. Koperski, Rydberg states of the CdAr van der Waals complex, Phys. Rev. A 99 (2019) 052510

[2] A. Kędziorski et al., to be submitted