Mass spectrometry; Electron Impact; Negative Ions; Dissociative Electron Attachment; CH4, C2H2, C2H4, C2H3X(X=Cl, F)
Abstract :
[en] The appearance of negative ions by dissociative electron attachment has been studied by electron impact on CH4, C2H2, C2H4 and C2H3X (X=F, Cl) using a sector field mass spectrometer. An interpretation has been attempted for the measured appearance potentials. The electronaffinity of C2 and C2H is found to be (3.3+/-0.3) eV and (2.3+/-0.2) eV respectively. Some evidence is brought for the existence of excited electronic states in polyatomic negative ions.
Research Center/Unit :
Laboratoire de Dynamique Moléculaire
Disciplines :
Chemistry
Author, co-author :
Locht, Robert ; Université de Liège - ULiège > Département de Chimie (Faculté des sciences) > Laboratoire de Dynamique Moléculaire (Sciences)
Language :
French
Title :
Etude par spectrométrie de masse de l'Apparition des ions négatifs par Attachement Electronique Dissociatif dans des molécules polyatomiques.
Alternative titles :
[en] Mass Spectrometric Study of the Appearance of Negative ions by Dissociative Electron Attachment in Polyatomic Molecules.
Publication date :
1970
Journal title :
Bulletin de la Classe des Sciences. Académie Royale de Belgique
ISSN :
0001-4141
Publisher :
Académie Royale de Belgique, Bruxelles, Belgium
Volume :
LVI
Issue :
8
Pages :
788-817
Funders :
FRFC - Fonds de la Recherche Fondamentale Collective
Commentary :
- Printed version of reprint available on request
- English version translated by the author
