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Efficiency of collision‐induced ionization of fast neutrals: Effects of neutral internal energy and neutral translational energy
Author(s) -
Harnish David,
Holmes John L.
Publication year - 1994
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210290502
Subject(s) - ionization , reionization , atomic physics , projectile , spectral line , collision , translational energy , chemical ionization , mass spectrum , chemistry , physics , excited state , mass spectrometry , ion , computer security , organic chemistry , quantum mechanics , astronomy , chromatography , computer science
The ionization efficiencies of fast beams of CO and C 2 H 4 , with oxygen as target gas were shown to increase with increasing translational energy and to decrease with increase in internal energy. The latter may arise from a greater probability of homolysis in the neutral projectile species; it is not likely to arise from increased ionization of the target. Experimental parameters (and their validity) relating to the measurement of collision‐induced dissociative ionization mass spectra and which are also applicable to the reionization step in neutralization—reionization mass spectra were investigated.