Non-adiabatic transitions from the I2(E) induced by the transition dipole moment of I2(E-D) and the electric dipole moment of collision partners

Optical-optical double resonance spectroscopy is used to obtain total rate constants, electronic branching ratios, and vibrational product state distributions for non-adiabatic transitions among the first-tier ion-pair states of the I2 molecule excited to the E0g+,vE=8,13,19;JE ≈ 55 rovibronic levels in collisions with M = CD3I and CH3COCH3.