Add time:08/19/2019         Source:sciencedirect.com

The dissociative ionization of NH3 is investigated in its N+ dissociation channel in the 20–50 eV electron energy range. Both the translational energy distribution and the appearance energies are measured. The kinetic energy versus appearance energy plot reveals seven N+ producing processes. Near the onset (22.5–24.0 eV) dissociative autoionization occurs whereas direct dissociative ionization produces N+ in the 24.5–30 eV range. Above 35 eV mainly N+/H+ ion pairs are formed at the expense of doubly ionized states. The dissociative electroionization work on NH3 being completed, a review of the results is presented.

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