Premium
Charge separation reaction dynamics from pepipico using a position‐sensitive detector
Author(s) -
Hsieh S.,
Eland J. H. D.
Publication year - 1995
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.1290091308
Subject(s) - chemistry , kinetic energy , dication , coincidence , ion , dissociation (chemistry) , detector , atomic physics , analytical chemistry (journal) , resolution (logic) , physics , optics , chromatography , medicine , alternative medicine , organic chemistry , pathology , quantum mechanics , artificial intelligence , computer science
Abstract The combination of a position‐sensitive detector with the photoelectron–photoion–photoion coincidence (PEPIPICO) technique allows complete determination of the laboratory momenta and angles of ions in coincidence. The technique yields angular distributions of fragment ions, high resolution kinetic energy distributions for two‐body reactions and Newton diagrams for three‐body dication dissociation. The reactions SF 6 2+ →F + +SF 3 + +F 2 and cyclo‐C 4 F 8 2+ →CF 3 + +C 2 F 4 + +CF are shown to follow sequential mechanisms as determined previously. The technique's potential for elucidating more complex reactions is illustrated for SO 2 2+ →O + +S + +O and CF 3 I 2+ →CF 2 + +I + +F, which show variations in mechanism as a function of total kinetic energy release.