Recent experiments on gas spectroscopy

It is well-known that shape resonances play a major role in molecular photoionization. In effect, their characterization can provide a deep understanding of the dynamics that are being carried out in the electronic structure of molecules, during the photoionization process. Previous work, shape resonance effect, when included, was demonstrated to lead to the non-applicability of the vertical excitation principle, given by Frank-Condon. Because the photoelectron can be trapped in a quasibound state and from there decay slowly, it can carry valuable information about the surrounding potential. Recent experiments on gas spectroscopy are detailed