KINETIC-ENERGY DISTRIBUTIONS OF CHARGED FRAGMENTS FROM CO2 DISSOCIATIVE IONIZATION

Authors
VELOTTA R DIGIROLAMO P BERARDI V SPINELLI N ARMENANTE M
Citation
R. Velotta et al., KINETIC-ENERGY DISTRIBUTIONS OF CHARGED FRAGMENTS FROM CO2 DISSOCIATIVE IONIZATION, Journal of physics. B, Atomic molecular and optical physics, 27(10), 1994, pp. 2051-2061
Citations number
20
Categorie Soggetti
Physics, Atomic, Molecular & Chemical",Optics
Journal title
Journal of physics. B, Atomic molecular and optical physics → ACNP
ISSN journal
09534075
Volume
27
Issue
10
Year of publication
1994
Pages
2051 - 2061
Database
ISI
SICI code
0953-4075(1994)27:10<2051:KDOCFF>2.0.ZU;2-G
Abstract
The electron impact ionization of CO2 molecules has been studied in or der to determine the dissociative paths leading to charged fragments. The electron impact energy (EIE) ranged in the interval 40-130 eV. Tim e-of-flight spectroscopy was used to obtain the kinetic-energy distrib ution (KED) extending down to thermal kinetic-energy fragments. We hav e evaluated the contribution of indirect processes leading to charged fragments through CO2 autoionization. The threshold for C2+ production from CO2 has been measured and a possible production channel is analy sed.