Retrieving the size of particles with rough and complex surfaces from two-dimensional scattering patterns
Retrieving the size of particles with rough and complex surfaces from two-dimensional scattering patterns
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DOI：
10.1016/j.jqsrt.2012.06.019
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发表时间：
2012-12-01
影响因子：
2.3
通讯作者：
Greenaway, R.
中科院分区：
文献类型：
--
作者：
Ulanowski, Z.;Hirst, E.;Greenaway, R.
散射强度测量是用于确定小颗粒尺寸的常用方法。然而，它需要校准，并且由于入射辐照度或检测器灵敏度的变化而受到误差的影响。二维散射模式的分析提供了另一种方法。我们测试形态图像处理操作的图案从不同范围的颗粒粗糙的表面和/或复杂的结构，包括矿物粉尘，孢子，花粉，冰的类似物和球簇从4到88 μ m的大小。发现强度峰的中值表面积是最稳健的量度，并且其与颗粒尺寸成反比。这种趋势适用于大多数颗粒类型，只要存在相当大的粗糙度或复杂性。这项技术的一个重要应用是测量大气颗粒的大小，如冰晶。(C)2012爱思唯尔有限公司保留所有权利。
Scattered intensity measurement is a commonly used method for determining the size of small particles. However, it requires calibration and is subject to errors due to changes in incident irradiance or detector sensitivity. Analysis of two-dimensional scattering patterns offers an alternative approach. We test morphological image processing operations on patterns from a diverse range of particles with rough surfaces and/or complex structure, including mineral dust, spores, pollen, ice analogs and sphere clusters from 4 to 88 mu m in size. It is found that the median surface area of intensity peaks is the most robust measure, and it is inversely proportional to particle size. The trend holds well for most particle types, as long as substantial roughness or complexity is present. One important application of this technique is the sizing of atmospheric particles, such as ice crystals. (C) 2012 Elsevier Ltd. All rights reserved.