[en] The decay of CH3F+ in the CH2+, CH3+ and CH2F+ dissociation channels has been investigated by photoionization mass spectrometry using synchrotron radiation in the energy range 10-25 eV. The photoabsorption curve of CH3F and the ionization efficiency curves of CH2+, CH3+ and CH2F+ as well as the kinetic energy-versus-appearance energy diagram for CH3+ were recorded. For the three fragment ions dissociative autoionization is a prominent formation process. Direct dissociative ionization is observed for the same ions through the decomposition of the CH3F+(A2A1+B2E) states at 16.1 eV as well as presumably of the C2A1 state at about 22.5 eV.
Disciplines :
Chemistry
Author, co-author :
Locht, Robert ; Université de Liège - ULiège > Département de Chimie (Faculté des sciences) > Laboratoire de Dynamique Moléculaire (Sciences)
Momigny, J.
Rühl, E.; Freie Universität Berlin > Institut für Physikalische Chemie
Baumgärtel, H.; Freie Universität Berlin > Institut für Physikalische Chemie
Language :
English
Title :
A Mass Spectrometric Photoionization Study of CH3F. The CH2+, CH3+ and CH2F+ Ion Formation.
Alternative titles :
[fr] Une étude de la photoionisation dissociative de CH3F. La formation des ions CH2+, CH3+ et CH2F+.
Publication date :
1987
Journal title :
Chemical Physics
ISSN :
0301-0104
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
117
Pages :
305-313
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
BMBF - Bundesministerium für Bildung und Forschung [DE] F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Funding text :
ARC, BFT, FNRS
Commentary :
- Printed version of reprint available on request
- Version imprimée du tiré-à-part disponible sur demande
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