Metastable C 3H 5 2+ produced by electron impact of propane
Abstract
Metastability of C 3H 5 2+ ions formed by electron impact ionization of propane was monitored with the help of a magnetic mass spectrometer of reversed geometry (BEE geometry). In the present paper, we report decay reactions resulting in C 3H 4 ++H +, and C 3H 3 ++H 2 +. We observed fragment ions which are formed with high kinetic energy. Mass analyzed ion kinetic energy (MIKE) scan technique in the third field free region of the mass spectrometer was applied to identify the fragment ions and determine their kinetic energy release (KER). An average KER of 1.6±0.3 eV for the first reaction and 0.67±0.15 eV for the second reaction are reported.
- Publication:
-
Vacuum
- Pub Date:
- January 2007
- DOI:
- 10.1016/j.vacuum.2007.01.002
- Bibcode:
- 2007Vacuu..81.1129G
- Keywords:
-
- Electron impact ionization;
- Mass spectrometry;
- Metastable decay;
- Coulomb explosion;
- MIKE technique;
- Propane;
- Doubly charged ions;
- Kinetic energy release