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Woodcock, K. R. S., Vondrak, T., Meech, S. R. 
ORCID: https://orcid.org/0000-0001-5561-2782 and Plane, J. M. C.
(2006)
A kinetic study of the reactions FeO+ + O, Fe +·N2 + O, Fe+·O2 + O and FeO+ + CO: Implications for sporadic E layers in the upper atmosphere.
Physical Chemistry Chemical Physics, 8 (15).
pp. 1812-1821.
ISSN 1463-9084
Abstract
These gas-phase reactions were studied by pulsed laser ablation of an iron target to produce Fe+ in a fast flow tube, with detection of the ions by quadrupole mass spectrometry. Fe+·N2 and Fe+·O2 were produced by injecting N2 and O2, respectively, into the flow tube. FeO+ was produced from Fe+ by addition of N2O, or by ligand-switching from Fe+·N2 following the addition of atomic O. The following rate coefficients were measured: k(FeO+ + O → Fe+ + O2, 186–294 K) = (3.2 ± 1.5) × 10−11; k(Fe+·N2 + O → FeO++ N2, 294 K) = (4.6 ± 2.5) × 10−10; k(Fe+·O2 + O → FeO+ + O2, 294 K) = (6.3 ± 2.7) × 10−11; and k(FeO+ + CO → Fe+ + CO2, 294 K) = (1.59 ± 0.34) × 10−10 cm3 molecule−1 s−1, where the quoted uncertainties are a combination of the 1σ standard errors in the kinetic data and the systematic experimental errors. The surprisingly slow reaction between FeO+ and O is examined using ab initio quantum calculations of the relevant potential energy surfaces. The importance of this reaction for controlling the lifetime of sporadic E layers is then demonstrated using a model of the upper mesosphere and lower thermosphere.
| Item Type: | Article |
|---|---|
| Faculty \ School: | Faculty of Science > School of Environmental Sciences Faculty of Science > School of Chemistry (former - to 2024) |
| UEA Research Groups: | Faculty of Science > Research Groups > Centre for Photonics and Quantum Science Faculty of Science > Research Groups > Chemistry of Light and Energy Faculty of Science > Research Groups > Physical and Analytical Chemistry (former - to 2017) |
| Depositing User: | Rosie Cullington |
| Date Deposited: | 24 Jan 2011 11:53 |
| Last Modified: | 24 Sep 2024 09:53 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/19609 |
| DOI: | 10.1039/B518155K |
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