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arXiv physics/9807033physics.optics
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X射线束在粗糙表面滑动反射的数值模拟

Numerical simulation of gliding reflection of X-ray beam from rough surface

T. A. Bobrova, L. I. Ognev

摘要:

本文基于准光学方程的数值积分,提出了一种研究X射线在粗糙窄介质波导中传播的新方法。在计算中,使用具有给定统计特性的模型粗糙表面。结果表明,窄波导中的损耗强烈地依赖于壁面粗糙度和输入角。如果波导的宽度较小或约为1 mkm,则即使在零输入角下损耗也不为零。该效应被解释为衍射的影响。透射的X射线辐射的角展度比全外部反射的菲涅耳角窄得多。

英文摘要:

A new method for investigation of x-ray propagation in a rough narrow dielectric waveguide is proposed on the basis of the numerical integration of the quazioptical equation. In calculations a model rough surface was used with the given statistical properties. It was shown that the losses in the narrow waveguides strongly depend on the wall roughness and on the input angle. The losses are not zero even at zero input angle if the width of the waveguide is smaller or about 1 mkm. The effect is accounted for as the influence of diffraction. The angular spread of the transmitted X-ray radiation is much more narrow than the Fresnel angle of the total external reflection.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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