New Observation of the Na2 2 3Πg and 3 3Πg States by Pulsed Perturbation Facilitated Optical-Optical Double Resonance Spectroscopy

The Ω = 0，1，2 levels of the Na2 2 3Πg and 3 3Πg states in the energy region between 34860 cm-1 above the Te of the ground state and the 3s+3d atomic limit have been probed by pulsed laser perturbation facilitated optical-optical double resonance（PFOODR）spectroscopy. Strong mixing of these two states has been observed. The Tv and Bv values are given for the Ω = 0 component without deperturbation.