Mass spectrometry studies of the ionization of organic molecules by slow positrons
Abstract
The dissociative ionization of organic molecules, induced by positrons having energies below positronium thresholds (0.5-3 eV), has been studied. The ionization-fragmentation yields increase as positron energies decrease. The energies required for dissociative ionization are supplied by the annihilation processes. Fragmentation occurs by breakage of C-C single bonds in preference to double or triple bonds.
- Publication:
-
Presented at the 10th International Conference on Positron Annihilation
- Pub Date:
- 1994
- Bibcode:
- 1994poan.confQ..23H
- Keywords:
-
- Annihilation Reactions;
- Fragmentation;
- Ionization;
- Mass Spectra;
- Mass Spectroscopy;
- Molecular Collisions;
- Positrons;
- Chemical Bonds;
- Dissociation;
- Organic Materials;
- Spectroscopic Analysis;
- Atomic and Molecular Physics