Journal
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
Volume 155, Issue 1-3, Pages 141-147Publisher
ELSEVIER
DOI: 10.1016/j.elspec.2006.10.011
Keywords
PEPICO; core ionization; Auger; core excitation; molecular electron spectroscopy; time-of-flight; coincidence
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A new electron-energy-resolved electron-ion coincidence setup was developed based on the Scienta SES-100 hemispherical electron analyzer and a Wiley-McLaren type ion TOF spectrometer. With this setup, an electron-ion coincidence study of gas-phase acetonitrile (CH3CN) was performed using synchrotron radiation. The fragmentation patterns in coincidence with resonant Auger electrons were recorded, following N 1s core excitations to the molecular orbital of the pi*(CN) character. Also the dissociation of doubly charged molecular ions produced after normal Auger decay of N 1s(-1) core-hole states was investigated from PEPICO and PEPIPICO maps. Kinetic energy releases in some reactions were determined with the aid of Monte-Carlo modelling. (c) 2006 Elsevier B.V. All rights reserved.
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