A study of the dissociative recombination of CaO+ with electrons: Implications for Ca chemistry in the upper atmosphere
dc.bibliographicCitation.firstPage | 333 | |
dc.bibliographicCitation.issue | 24 | |
dc.bibliographicCitation.lastPage | 339 | |
dc.bibliographicCitation.volume | 43 | |
dc.contributor.author | Bones, D.L. | |
dc.contributor.author | Gerding, M. | |
dc.contributor.author | Höffner, J. | |
dc.contributor.author | Gómez Martín, Juan Carlos | |
dc.contributor.author | Plane, J.M.C. | |
dc.date.accessioned | 2022-05-11T06:29:23Z | |
dc.date.available | 2022-05-11T06:29:23Z | |
dc.date.issued | 2016 | |
dc.description.abstract | The dissociative recombination of CaO+ ions with electrons has been studied in a flowing afterglow reactor. CaO+ was generated by the pulsed laser ablation of a Ca target, followed by entrainment in an Ar+ ion/electron plasma. A kinetic model describing the gas-phase chemistry and diffusion to the reactor walls was fitted to the experimental data, yielding a rate coefficient of (3.0 ± 1.0) × 10−7 cm3 molecule−1 s−1 at 295 K. This result has two atmospheric implications. First, the surprising observation that the Ca+/Fe+ ratio is ~8 times larger than Ca/Fe between 90 and 100 km in the atmosphere can now be explained quantitatively by the known ion-molecule chemistry of these two metals. Second, the rate of neutralization of Ca+ ions in a descending sporadic E layer is fast enough to explain the often explosive growth of sporadic neutral Ca layers. | eng |
dc.description.version | publishedVersion | eng |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/8947 | |
dc.identifier.uri | https://doi.org/10.34657/7985 | |
dc.language.iso | eng | eng |
dc.publisher | Hoboken, NJ : Wiley | |
dc.relation.doi | https://doi.org/10.1002/2016GL071755 | |
dc.relation.essn | 1944-8007 | |
dc.relation.ispartofseries | Geophysical research letters : GRL 43 (2016), Nr. 24 | |
dc.rights.license | CC BY-NC-ND 4.0 Unported | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.subject | dissociative electron recombination | eng |
dc.subject | ion-molecule chemistry | eng |
dc.subject | meteoric metal layers | eng |
dc.subject | sporadic layers | eng |
dc.subject.ddc | 550 | |
dc.title | A study of the dissociative recombination of CaO+ with electrons: Implications for Ca chemistry in the upper atmosphere | eng |
dc.type | article | eng |
dc.type | Text | eng |
dcterms.bibliographicCitation.journalTitle | Geophysical research letters : GRL | |
tib.accessRights | openAccess | eng |
wgl.contributor | IAP | ger |
wgl.subject | Geowissenschaften | ger |
wgl.subject | Physik | ger |
wgl.type | Zeitschriftenartikel | ger |
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