Dynamical behavior of electronic states of NH32+ prepared from N1s ionization of ammonia

Abstract

Several electronic states of NH32+ were prepared by Auger decay following core electron ionization of NH3. The ionic products from these states were observed by single-event energy-resolved Auger electron multiple-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 only weakly on the electronic state producing the fragments.