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Charge‐separation reactions of N 2 O cations formed by low‐ and high‐energy ionization
Author(s) -
Eland J. H. D.,
Murphy V. J.
Publication year - 1991
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290050502
Subject(s) - chemistry , dication , ion , dissociation (chemistry) , atomic physics , ionization , mass spectrum , electron ionization , ionization energy , excitation , physics , organic chemistry , quantum mechanics
Triple and quardruple coincidence charge‐separation spectra of nitrous oxide ionized by single low‐energy photons and by high‐energy electrons are reported. Low‐lying states of the molecular dication, which are populated at all energies, dissociate mainly into ion pairs by two‐body reactions. The reaction producing N + +N+O + is weak at low excitation energy and may occur by a very fast secondary dissociation of intermediate dinitrogen ions. At high energy a major new effect is triple ionization followed by dissociation into three atomic ions. These ion triple produce a significant spurious contribution to the spectrum of ion pairs, and several sorts of pair whih appear at high energy are mainly or entirely artifacts of this type.