颗粒散射光能分布的反常移动及其对粒度分析的影响

基于米氏散射原理的激光粒度仪是颗粒测量领域应用最广泛的仪器之一。通常情况下颗粒越小，散射角越大，激光粒度仪探测器阵列接收到的散射光能分布的主峰位置越靠外。但是，对特定相对折射率的颗粒，在某些粒径区间，散射光能分布的主峰位置会随着颗粒粒径的减小而向探测器阵列的内侧移动，称之为散射光能分布的反常移动。根据米氏散射原理，给出了反常移动的规律以及不同相对折射率下反常移动的粒径区间，分析了反常移动对粒度分析的影响，提出了降低该影响的方法，并对实际样品进行测试对比。结果表明，该方法可以降低反常移动对粒度分析的影响。

Abstract

Laser particle sizer which based on Mie scattering theory is one of the most widely used instruments in particle size measurement. Generally the smaller the particles are, the bigger the scattering angle is. The main peak position of Mie scattered energy distribution received by the detector array moves outward. However, for some particles of relative index of refraction in certain size ranges, the main peak position of scattered energy distribution moves toward the inside of the detector array as the particle size decreases, which can be called the abnormal moving of scattered energy distribution. Based on Mie scattering theory, the patterns of such abnormal moving and abnormal particle size interval of different relative indexes of refraction are obtained, the effect on particle size analysis is analysed, a method to reduce the effect is proposed. An actual sample is measured and compared. The results show that this method can reduce the effect of abnormal moving on particle size analysis.

参考文献

[1] 蔡小舒, 苏明旭, 沈建琪等. 颗粒粒度测量技术及应用[M]. 北京: 化学工业出版社, 2010

Cai Xiaoshu, Su Mingxu, Shen Jianqi et al.. Particle Size Measurement Techniques and Applications [M]. Beijing: Chemical Industry Press, 2010

[2] 张福根. 激光粒度仪的光学结构[C]. 中国颗粒学会2006年年会暨海峡两岸颗粒技术研讨会论文集, 2006. 19～23

Zhang Fugen. The optical structure of laser particle sizer [C]. 2006 Annual Conference of Chinese Society of Particuology cun Symposium on Particle Technology across Taiwai Straits, 2006. 19～23

[3] H.C. Van de Hulst. Light Scattering by Small Particles [M]. New York: Wileg, 1957

[4] 吴伟, 秦石桥, 黄竹青. 水滴粒径散射测量中的快速反演方法研究[J]. 光学学报, 2011, 31(7): 0712008

Wu Wei, Qin Shiqiao, Huang Zhuqing. A fast inversion method for water droplet size determination in scattering light measurement [J]. Acta Optica Sinica, 2011, 31(7): 0712008

[5] 李应乐, 李瑾, 王明军等. 均匀各向异性介质球散射的解析研究[J]. 光学学报, 2012, 32(4): 0429002

Li Yingle, Li Jin, Wang Mingjun et al.. Investigation of scattering for a uniformly anisotropic dielectric sphere [J]. Acta Optica Sinica, 2012, 32(4): 0429002

[6] 张小林, 黄印博, 饶瑞中. 一种内混合气溶胶粒子模型光散射的等效性[J]. 光学学报, 2012, 32(6): 0629001

Zhang Xiaolin, Huang Yinbo, Rao Ruizhong. Equivalence of light scattering by one internal-mixed model for aerosol particles [J]. Acta Optica Sinica, 2012, 32(6): 0629001

[7] 沈建琪, 刘蕾. 经典Mie散射的数值计算方法改进[J]. 中国粉体技术, 2005, 11(4): 1～5

Shen Jianqi, Liu Lei. An improved algorithm of classical Mie scattering calculation [J]. China Powder Science and Technology, 2005, 11(4): 1～5

[8] 冯明春, 高闽光, 徐亮等. 傅里叶变换红外光谱对水溶性气溶胶复折射率的测量分析方法研究[J]. 光学学报, 2012, 32(4): 0401002

Feng Mingchun, Gao Minguang, Xu Liang et al.. Measurement and analysis method of the complex refractive index on water-soluble aerosol by FTIR [J]. Acta Optica Sinica, 2012, 32(4): 0401002

[9] 徐峰, 蔡小舒, 沈嘉祺. 米氏理论的近似及在粒度测量中的应用[J]. 光学学报, 2003, 23(12): 1464～1469

Xu Feng, Cai Xiaoshu, Shen Jiaqi. Geometric approximation of light scattering in arbitrary diffraction regime for absorbing particles: application in laser particle sizing [J]. Acta Optica Sinica, 2003, 23(12): 1464～1469

[10] 陈中伟, 梁新刚, 徐向华等. 雾状水幕2种常用分布函数的近似转换[J]. 清华大学学报(自然科学版), 2011, 51(4): 467～470

Chen Zhongwei, Liang Xingang, Xu Xianghua et al.. Approximate conversion between two conventional distribution functions for water spray [J]. J. Tsinghua Univ. (Sci. & Tech.), 2011, 51(4): 467～470

[11] F. Ferri, G. Righini, E. Paganini. Inversion of low-angle elastic light-scattering data with a new method devised by modification of the Chahine algorithm [J]. Appl. Opt., 1997, 36(30): 7539～7550

[12] 葛宝臻, 魏永杰, 吕且妮. 基于分布宽度选取收敛阈值求解粒子尺寸分布[J]. 光电子·激光, 2007, 18(11): 1329～1332

Ge Baozhen, Wei Yongjie, Lü Qieni et al.. Study of invert particle size distribution by choosing convergence threshold based on distribution whdth [J]. Optoelectronics·Laser, 2007, 18(11): 1329～1332

[13] 吕且妮, 葛宝臻, 陈益亮等. 激光干涉粒子成像乙醇喷雾场粒子尺寸和粒度分布测量[J]. 中国激光, 2011, 38(3): 0308003

Lü Qieni, Ge Baozhen, Chen Yiliang et al.. Particle sizing and size distribution measurement of alcohol spray by interferometric particle imaging [J]. Chinese J. Lasers, 2011, 38(3): 0308003

葛宝臻, 潘林超, 张福根, 魏耀林. 颗粒散射光能分布的反常移动及其对粒度分析的影响[J]. 光学学报, 2013, 33(6): 0629001. Ge Baozhen, Pan Linchao, Zhang Fugen, Wei Yaolin. Abnormal Moving of Scattered Energy Distribution and Its Effect on Particle Size Analysis[J]. Acta Optica Sinica, 2013, 33(6): 0629001.

颗粒散射光能分布的反常移动及其对粒度分析的影响

关于本站 Cookie 的使用提示

全站搜索

颗粒散射光能分布的反常移动及其对粒度分析的影响

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索