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DOI | 10.5194/acp-19-12767-2019 |
Optical properties of meteoric smoke analogues | |
Aylett, Tasha1; Brooke, James S. A.1; James, Alexander D.1; Nachbar, Mario2; Duft, Denis2; Leisner, Thomas2,3; Plane, John M. C.1 | |
2019-10-11 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:19页码:12767-12777 |
文章类型 | Article |
语种 | 英语 |
国家 | England; Germany |
英文摘要 | 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 ( EEM), energy-dispersive X-ray spectroscopy (EDX) and electron energy loss spectroscopy (EELS) suggested the particles were most likely maghemite-like (gamma-Fe2O3) 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. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000489878000003 |
WOS关键词 | LIGHT-SCATTERING ; IRON ; PARTICLES ; CHEMISTRY ; HEMATITE ; DENSITY ; FE3O4 ; SIZE |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/187621 |
专题 | 地球科学 |
作者单位 | 1.Univ Leeds, Sch Chem, Leeds, W Yorkshire, England; 2.KIT, Inst Meteorol & Climate Res, Karlsruhe, Germany; 3.Heidelberg Univ, Inst Environm Phys IUP, Heidelberg, Germany |
推荐引用方式 GB/T 7714 | Aylett, Tasha,Brooke, James S. A.,James, Alexander D.,et al. Optical properties of meteoric smoke analogues[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(19):12767-12777. |
APA | Aylett, Tasha.,Brooke, James S. A..,James, Alexander D..,Nachbar, Mario.,Duft, Denis.,...&Plane, John M. C..(2019).Optical properties of meteoric smoke analogues.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(19),12767-12777. |
MLA | Aylett, Tasha,et al."Optical properties of meteoric smoke analogues".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.19(2019):12767-12777. |
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