Institutional Repository of Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, China
| Theoretical studies on particle shape classification based on simultaneous small forward angle light scattering and aerodynamic sizing | |
Zhang, Jin-Bi1,2; Ding, Lei1 ; Wang, Ying-Ping1; Zhang, Li1,2; Wu, Jin-Lei1,2; Zheng, Hai-Yang1; Fang, Li1
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| 2016-03-01 | |
| 发表期刊 | CHINESE PHYSICS B
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| 摘要 | Particle shape contributes to understanding the physical and chemical processes of the atmosphere and better ascertaining the origins and chemical compositions of the particles. The particle shape can be classified by the aspect ratio, which can be estimated through the asymmetry factor measured with angularly resolved light scattering. An experimental method of obtaining the asymmetry factor based on simultaneous small forward angle light scattering and aerodynamic size measurements is described briefly. The near forward scattering intensity signals of three detectors in the azimuthal angles at 120 degrees offset are calculated using the methods of T-matrix and discrete dipole approximation. Prolate spheroid particles with different aspect ratios are used as the shape models with the assumption that the symmetry axis is parallel to the flow axis and perpendicular to the incident light. The relations between the asymmetry factor and the optical size and aerodynamic size at various equivalent sizes, refractive indices, and mass densities are discussed in this paper. The numerically calculated results indicate that an elongated particle may be classified at diameter larger than 1.0 mu m, and may not be distinguished from a sphere at diameter less than 0.5 mu m. It is estimated that the lowest detected aspect ratio is around 1.5:1 in consideration of the experimental errors. |
| 文章类型 | Article |
| 关键词 | Particle Shape Aspect Ratio Asymmetry Factor Light Scattering |
| WOS标题词 | Science & Technology ; Physical Sciences |
| DOI | 10.1088/1674-1056/25/3/034201 |
| 关键词[WOS] | BIOLOGICAL AEROSOL-PARTICLES ; MINERAL DUST ; WIBS-4 ; DENSITY ; POLLEN |
| 收录类别 | SCI |
| 语种 | 英语 |
| 项目资助者 | National Natural Science Foundation of China(41275132) ; National Natural Science Foundation of China(41275132) ; National Natural Science Foundation of China(41275132) ; National Natural Science Foundation of China(41275132) ; National Natural Science Foundation of China(41275132) ; National Natural Science Foundation of China(41275132) ; National Natural Science Foundation of China(41275132) ; National Natural Science Foundation of China(41275132) ; National Natural Science Foundation of China(41275132) ; National Natural Science Foundation of China(41275132) ; National Natural Science Foundation of China(41275132) ; National Natural Science Foundation of China(41275132) ; National Natural Science Foundation of China(41275132) ; National Natural Science Foundation of China(41275132) ; National Natural Science Foundation of China(41275132) ; National Natural Science Foundation of China(41275132) |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| WOS记录号 | WOS:000375647400021 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.hfcas.ac.cn:8080/handle/334002/21614 |
| 专题 | 中科院安徽光学精密机械研究所 |
| 作者单位 | 1.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Lab Environm Spect, Hefei 230031, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 第一作者单位 | 中科院安徽光学精密机械研究所 |
| 推荐引用方式 GB/T 7714 | Zhang, Jin-Bi,Ding, Lei,Wang, Ying-Ping,et al. Theoretical studies on particle shape classification based on simultaneous small forward angle light scattering and aerodynamic sizing[J]. CHINESE PHYSICS B,2016,25(3):034201. |
| APA | Zhang, Jin-Bi.,Ding, Lei.,Wang, Ying-Ping.,Zhang, Li.,Wu, Jin-Lei.,...&Fang, Li.(2016).Theoretical studies on particle shape classification based on simultaneous small forward angle light scattering and aerodynamic sizing.CHINESE PHYSICS B,25(3),034201. |
| MLA | Zhang, Jin-Bi,et al."Theoretical studies on particle shape classification based on simultaneous small forward angle light scattering and aerodynamic sizing".CHINESE PHYSICS B 25.3(2016):034201. |
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