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王占山

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期刊论文

Depth-graded multilayer X-ray optics with broad angular response

王占山Zhanshan Wang ab Jianlin Cao a Alan G. Michette b*

Optics Communications 177(2000)25-32,-0001,():

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摘要/描述

A method of designing depth-graded multilayer structures with broad angular response for use as coatings in X-ray optics is presented. The design is based on the well-known Fresnel equations and recursive calculation, combined with a merit function plus random variation of the thickness of each layer. This allows the design of multilayer films for different requirements in X-ray optics. Results are presented on the layer thicknesses in depth-graded W/C multilayer films and their reflectivity as a function of the grazing incidence angle for Cu Ka radiation. The required minimum number of bilayers in depth-graded multilayer films depends on the grazing incidence angle, i.e., the saturation effect observed in the design of periodic multilayer films also emerges in the design of depth-graded multilayers. The predicted performances of multilayers designed using this method are superior to those designed using existing methods. All rights reserved.

版权说明:以下全部内容由王占山上传于   2004年12月29日 18时37分01秒,版权归本人所有。

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