| |  Online-Ressource |
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| Verfasst von: | Aylett, Tasha [VerfasserIn]  |
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| | Brooke, James S. A. [VerfasserIn] |
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| | James, Alexander D. [VerfasserIn] |
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| | Nachbar, Mario [VerfasserIn] |
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| | Duft, Denis [VerfasserIn] |
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| | Leisner, Thomas [VerfasserIn] |
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| | Plane, John M. C. [VerfasserIn] |
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| Titel: | Optical properties of meteoric smoke analogues |
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| Verf.angabe: | Tasha Aylett, James S. A. Brooke, Alexander D. James, Mario Nachbar, Denis Duft, Thomas Leisner, and John M. C. Plane |
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| E-Jahr: | 2019 |
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| Jahr: | 11 Oct 2019 |
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| Umfang: | 11 S. |
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| Fussnoten: | Gesehen am 17.12.2019 |
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| Titel Quelle: | Enthalten in: Atmospheric chemistry and physics / Discussions |
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| Ort Quelle: | Katlenburg-Lindau : EGU, 2001 |
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| Jahr Quelle: | 2019 |
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| Band/Heft Quelle: | 19(2019), 19, Seite 12767-12777 |
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| ISSN Quelle: | 1680-7375 |
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| Abstract: | <p><strong>Abstract.</strong> Accurate determination of the optical properties of analogues for meteoric smoke particles (MSPs), which are thought to be composed of iron-rich oxides or silicates, is important for their observation and characterization in the atmosphere. In this study, a photochemical aerosol flow system (PAFS) has been used to measure the optical extinction of iron oxide MSP analogues in the wavelength range 325-675 nm. The particles were made photochemically and agglomerate into fractal-like particles with sizes on the order of 100 nm. Analysis using transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX) and electron energy loss spectroscopy (EELS) suggested the particles were most likely maghemite-like (<span class="inline-formula"><i>γ</i></span>-<span class="inline-formula">Fe<sub>2</sub>O<sub>3</sub></span>) in composition, though a magnetite-like composition could not be completely ruled out. Assuming a maghemite-like composition, the optical extinction coefficients measured using the PAFS were combined with maghemite absorption coefficients measured using a complementary experimental system (the MICE-TRAPS) to derive complex refractive indices that reproduce both the measured absorption and extinction.</p> |
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| DOI: | doi:10.5194/acp-19-12767-2019 |
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| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext: https://doi.org/https://doi.org/10.5194/acp-19-12767-2019 |
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| | Verlag: https://www.atmos-chem-phys.net/19/12767/2019/ |
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| | DOI: https://doi.org/10.5194/acp-19-12767-2019 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| K10plus-PPN: | 1685747876 |
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| Verknüpfungen: | → Zeitschrift |
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Optical properties of meteoric smoke analogues / Aylett, Tasha [VerfasserIn]; 11 Oct 2019 (Online-Ressource)
