DYNAMICAL BEHAVIOR OF ELECTRONIC STATES OF NH32+ PREPARED FROM N1S IONIZATION OF AMMONIA

Several electronic states of NH32+ were prepared by Auger decay follow ing core electron ionization of NH3. The ionic 3 products from these s tates were observed by single-event energy-resolved Auger electron mul tiple-ion coincidence time-of-flight mass spectrometry. The dependence of the fragmentation channel branching ratios on the electronic state of the dication correlates with the energy threshold for each channel . In general, the kinetic energy released in fragmentation depends onl y weakly on the electronic state producing the fragments.