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MATLAB_functions_for_Mie_scattering_and_absorption
This report is a description of Mie-Scattering and Mie-Absorption programs written
in the numeric computation and visualisation software, MATLAB (Math Works,
1992), for the improvement of radiative-transfer codes, especially to account for rain
and hail in the microwave range and for aerosols and clouds in the submillimeter,
infrared and visible range. Excellent descriptions of Mie Scattering were given by
van de Hulst (1957) and by Bohren and Huffman (1983). The present programs are
related to the formalism of Bohren and Huffman (1983). In addition an extension
(Section 2.5) is given to describe the radial dependence of the internal electric field
of the scattering sphere and the absorption resulting from this field. Except for
Section 2.5, equation numbers refer to those in Bohren and Huffman (1983), in
short BH, or in case of missing equation numbers, page numbers are given. For a
description of computational problems in the Mie calculations, see the notes on p.
126-129 and in Appendix A of BH.
2019-05-08
CO2激光打孔的折衍混合f-θ透镜设计
激光打孔广泛应用于印刷电路板处理等领域,在该技术中!-! 透镜起到扫描成像的重要作用O
利用折衍混合系统设计了!-! 透镜1在满足性能要求的前提下1减少了透镜的个数1降低了系统成本O 该系
统采用像方远心光路1工作波长为9.25 "m1打孔直径50 "m1深度182 "m1扫描面积达70 mm!70 mmO
2013-04-03
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