...
首页> 外文期刊>Powder diffraction >Improvement of X-ray reflectivity calculations on a muItilayered surface
【24h】

Improvement of X-ray reflectivity calculations on a muItilayered surface

机译:多层表面上X射线反射率计算的改进

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

X-ray reflectometry is a powerful tool for investigating rough surface and interface structures. Presently, X-ray reflectivity is based on Parratt formalism, accounting for the effect of roughness by the theory of Nevot-Croce. However, the calculated results showed a strange phenomenon in that the amplitude of the oscillation because of interference effects increases in the case of a specific roughness of the surface. We propose that the strange results originated from the currently used equation because of a serious error in which the Fresnel transmission coefficient in the reflectivity equation is increased at a rough interface, and the increase in the transmission coefficient completely overpowers any decrease in the value of the reflection coefficient because of lack of consideration in diffuse scattering. In the present study, we present a new improved formalism that corrects this error, and thereby derives an accurate analysis of X-ray reflectivity from a multilayer surface, taking into account the effect of roughness-induced diffuse scattering.
机译:X射线反射仪是研究粗糙表面和界面结构的强大工具。目前,X射线反射率基于Parratt形式主义,并通过Nevot-Croce理论解释了粗糙度的影响。然而,计算结果显示出奇怪的现象,即在表面的特定粗糙度的情况下,由于干涉效应而引起的振荡幅度增加。我们认为,由于存在严重的误差,反射率方程中的菲涅耳透射系数在粗糙的界面处增加,并且透射系数的增加完全抵消了反射率方程中的任何减小的影响,因此得出的奇怪结果源自当前使用的方程。反射系数是由于未考虑漫散射而引起的。在本研究中,我们提出了一种新的改进的形式主义,可以纠正此错误,从而在考虑到粗糙度引起的漫散射的影响的情况下,可以对多层表面的X射线反射率进行准确的分析。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号