Abstract
The concept and characteristics of “superexcited states”, which play essential roles in dissociative recombination, are explained from a general view point of the mechanisms of molecular dynamic processes. The states are classified into (1) doubly excited states (1st kind of superexcited state) and (2) rovibrationally excited Rydberg states (2nd kind). Interplay between theory and experiment is pointed out to be very useful and important in order to reveal the properties of these states. This is demonstrated in the case of NO. The REMPI (Resonantly Enhanced Multi-Photon Ionization) experiment is analyzed by the MQDT (Multichannel Quantum Defect Theory). An analysis of the dissociative recombination of NO+ is reported with use of the information thus obtained. The B2Π dissociative first kind of superexcited state is found to be a dominant path for the dissociative recombination of NO+. An interesting interplay between two mechanisms is also found.
Published Version
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