Popis: |
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 I 2 molecule excited to the E 0 g + , v E = 8 , 13 , 19 ; J E ≈ 55 rovibronic levels in collisions with M = CD 3 I and CH 3 COCH 3 . It is shown that I 2 ( E → M D ) near-resonant transitions are caused by the interaction between the transition dipole moment of I 2 (E–D) and the permanent electric dipole moment of M . The I 2 (D) state vibrational levels populated due to polarization interaction accompanied by quasi-resonance excitation of the collision partner are also observed. |