Investigation of Double Resonance Spectroscopy of Iodine Molecules for Use in Quantum Beat Experiments

The resonant B3PI+u to X0+g and resonant E0+ g to D02g to B3PI+u to X0+g transitions of I2 vapor have been studied by direct observation of fluorescence emitted from the B, E and D' states, respectively. Potential energy curves for the X0+g , B3PI+u , D0+u , D02g, A02u and E0+g states are calculated using Dunham coefficients from literature via the Rydberg-Klein-Rees Inversion Method. The generated turning points are then used to calculate Franck-Condon factors and Einstein A-coefficients. Both one and two-photon emission spectra are observed and analyzed