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Ion momentum imaging study of the ion–molecule reaction Ar+ + O2 → Ar + O2+
- Source :
- Physical Chemistry Chemical Physics. 22:4640-4646
- Publication Year :
- 2020
- Publisher :
- Royal Society of Chemistry (RSC), 2020.
-
Abstract
- Charge exchange reactions between Ar+(2P) and O2 (X3Σ−g) are investigated in the collision energy range of 3.40–9.24 eV within the center-of-mass coordinate, by using the ion momentum imaging technique. The internal energy of the product O2+ is enhanced gradually with the increase of collision energy, and the forward-scattered O2+ ions are distributed in the broader range of scattering angle at higher collision energies. At the low collision energy of 3.40 eV, the resonant charge transfer, similar to a photon ionization process, leads to the Franck–Condon-like vibrational state population of O2+ at the a4Πu state. At the higher collision energies, besides a4Πu and the high-lying states that are visible in the photoionization process, the O2+ products could be populated at some electronically bound states in the non-Franck–Condon region. The present observations indicate again the strong collision-energy dependences of the charge exchange reactions, but distinctly different from our previous findings for Ar+ + NO → Ar + NO+.
- Subjects :
- Physics
education.field_of_study
Range (particle radiation)
Photon
010304 chemical physics
Internal energy
Population
General Physics and Astronomy
Photoionization
010402 general chemistry
01 natural sciences
0104 chemical sciences
Ion
Ionization
0103 physical sciences
Bound state
Physical and Theoretical Chemistry
Atomic physics
education
Subjects
Details
- ISSN :
- 14639084 and 14639076
- Volume :
- 22
- Database :
- OpenAIRE
- Journal :
- Physical Chemistry Chemical Physics
- Accession number :
- edsair.doi...........850924af1b10fbef5fe36e1146449a2a