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Published on: March 24, 2018
Communication: state mixing by spin-orbit coupling in the anionic chloroiodine dissociations
1Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China.
Abstract:
Three spin-orbit states, 1(2)Π1/2, 2(2)Π3/2, and 2(2)Π1/2, of chloroiodine anion (ICl(-)) formed by low-energy electron attachment in the Franck-Condon region are associated with the dissociative limits of I(-) ((1)S0) and Cl ((2)P3/2) or Cl(*) ((2)P1/2) fragments. Within the adiabatic scheme, the presumptive Π-symmetry of the fragment angular distributions is dramatically changed to be the Π-Σ mixing symmetry, due to the significant spin-orbit interaction effect on the electronic state couplings of ICl(-). The present experimental approach also enables us to separate the contributions of different electronic states from the mixed states, providing a crucial method for quantitatively evaluating the configuration-interaction wavefunctions.
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