Superoxide anion (O2−) collisions with CO2 molecules in the energy range of 50–950 eV

A novel gas-phase molecular scattering study is reported for O2- collisions with CO2 for impact energies ranging from 50 to 950 eV in the lab frame. The absolute total electron detachment, relative total, and partial ionization cross sections have been measured within this energy range together with the positive ion yields. The primary anionic beam projectile is produced in a pulsed hollow cathode discharge induced plasma, and its interactions with the neutral molecular target occur in a gas cell at a well-known constant pressure. For impact energies above 500 eV, high mass (m > 44 u) charged complexes have been detected. With the aid of a theoretical study using ab initio methods, we propose a mechanism to infer the formation of these cationic species, which have been assigned to projectile-target stable compounds (CO3+ and CO4+).

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Publication Details

Journal
The Journal of Chemical Physics
Published
2025-02-03
DOI
https://doi.org/10.1063/5.0242954
Citations
1
Primary Topic
Mass Spectrometry Techniques and Applications
Type
article
Field-Weighted Citation Impact
0.76

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article

Superoxide anion (O2−) collisions with CO2 molecules in the energy range of 50–950 eV

Sergio Díaz‐Tendero, A. Lozano, C. Guerra, J. C. Oller et al.
1 citations
The Journal of Chemical Physics
Mass Spectrometry Techniques and Applications
0.76
article

Superoxide anion (O2−) collisions with CO2 molecules in the energy range of 50–950 eV

Sergio Díaz‐Tendero, A. Lozano, C. Guerra, J. C. Oller, P. Limão-Vieira, Fernando Aguilar‐Galindo, G. Garcı́a, M. Leiferman
article en
1 citations

Abstract

A novel gas-phase molecular scattering study is reported for O2- collisions with CO2 for impact energies ranging from 50 to 950 eV in the lab frame. The absolute total electron detachment, relative total, and partial ionization cross sections have been measured within this energy range together with the positive ion yields. The primary anionic beam projectile is produced in a pulsed hollow cathode discharge induced plasma, and its interactions with the neutral molecular target occur in a gas cell at a well-known constant pressure. For impact energies above 500 eV, high mass (m > 44 u) charged complexes have been detected. With the aid of a theoretical study using ab initio methods, we propose a mechanism to infer the formation of these cationic species, which have been assigned to projectile-target stable compounds (CO3+ and CO4+).

The Journal of Chemical PhysicsVol. 162(5)
Roche (Switzerland) (CH), Université Toulouse III - Paul Sabatier (FR), Consejo Superior de Investigaciones Científicas (ES), University of Wollongong (AU), Instituto de Física Fundamental (ES), Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (ES), Institut de Recherche en Astrophysique et Planétologie (FR), Universidad Autónoma de Madrid (ES), Universidade Nova de Lisboa (PT)
European Association of National Metrology Institutes, Universidad Autónoma de Madrid, Ministerio de Ciencia e Innovación, Agencia Estatal de Investigación
Affordable and clean energy
Openalex Percentile: Top 35%
Mass Spectrometry Techniques and Applications
0.76
DOIOpen Access PDFOpenAlex
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