Resonance ionization spectra of a Ba2 excimer and study of the ionization mechanism

The structure of a new Ba 2 excimer is presented. A two-photon transition of BaI, band of Ba 2 and two-photon hybrid transition were observed. A new method is proposed for analyzing the ionization mechanism of the Rydberg states of atoms and molecules with thermionic diode, and the ionization channels of BaI and Ba 2 are discussed