Zhang Fugen Rong Yuelong Cheng Lu
(OMEC lastrument Co.Ltd., Zhuhai S.E.Z.)(Dept.of Physics,Nankai Univesiy)
Abstract
On the basis of experimental data, quantitative analysis by both physical and geometic optics and calculation by Mie's scattering theory, it is proved that theerror of thecaleulated light energydistribution by thediffraction theory couldnot be neglected in the laser paticle sizer even for large particles relative to the light wavelength. This error is distributed mainly over the scope of large scattering angle, which appoximately equal to the light energy distibution scattered by particles of diameterabout lμm. It is also proved that the error will strikingly decrease if the particles is absorhent of light.
Keywords：diffraction, Mie's Scattering, light energy distribution
First Author:张福根，工学博士。1983年夏毕业于杭州大学物理系，
1986年春提前毕业于南开大学物理系光学专业，并取得硕士学位，
随即进入天津大学精仪系光学仪器专业，攻读博士学位，1989年春
完成学业，继而留校任教一年，1990年春调森海特区工作。1992年
在珠海创办欧美克仪器公司，专门从事激光粒度仪开发研究。拥有
二项专利、一项省级重大科技成果，在国内外发表论文十多篇。
DOI：10.13732/j.issn.1008-5548.1996.01.002
