Two-dimensional Guinier analysis: Application to single aerosol particles in-flight

被引：14

作者：

Berg, Matthew J. ^{[1
,2
]}

Hill, Steven C. ^{[2
]}

Pan, Yong-Le ^{[2
]}

Videen, Gorden ^{[2
]}

机构：

[1] Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 USA

[2] USA, Res Lab, RDRL CIE S, Adelphi, MD 20783 USA

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 22期

关键词：

SMALL-ANGLE SCATTERING;

D O I：

10.1364/OE.18.023343

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This work presents an apparatus that measures near-forward two-dimensional elastic scattering patterns of single aerosol particles and proposes a two-angle extension of the Guinier law to analyze these patterns. The particles, which approximately range from 2 to 8 micrometers in size, flow through the apparatus in an aerosol stream. A spatial filtering technique separates the near-forward portion of the patterns from the illumination light. Contours intended to represent the geometrical profile of the particles are generated from the patterns using the extension of the Guinier law. The analysis is applied to spherical and nonspherical particles, and the resulting contours are found to be consistent with particle shape only for spherical particles. (C) 2010 Optical Society of America

引用

页码：23343 / 23352

页数：10

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