Non-adiabatic E → D, D′, β, γ, δ transitions in the first ion-pair tier of molecular iodine induced by collisions with I2, He, Ar, Kr, Xe

Optical-optical double resonance spectroscopy and quantum scattering calculations are 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, 19, JE ≈ 55 rovibronic levels in collisions with I2, He, Ar, Kr and Xe.