层间扩散对多层膜镜单色器性能的影响  

Influence of Diffusion Layer for Multilayer Monochromator

作　　者：李新喜[1] 王燕[1] 黄朝强[1] 陈波[1] 

机构地区：[1]中国工程物理研究院核物理与化学研究所,绵阳621900

出　　处：《现代科学仪器》2009年第4期81-85,共5页Modern Scientific Instruments

基　　金：中国工程物理研究院科学技术发展基金(批准号:2007B02002)资助课题

摘　　要：结合新近发展的多层膜极化超镜涂层材料CoFe/TiZr,采用中子反射实验测量数据,以矩阵方法为基础,对有无考虑层间扩散、表层氧化两种情况进行了进行了理论计算。采用超镜实际结构设计方法(Real Structure Design,RSD),运用双势函数处理模型,考虑表层氧化,获得了新型超镜涂层材料CoFe/TiZr镀制多层膜镜单色器的工艺要求以及有效中子损失情况。计算结果可为采用CoFe/TiZr作为涂层材料镀制多层膜镜单色器或者多层膜镜单色器的制备及理论设计优化工作提供有价值的参考。CoFe/TiZr material is the newly development multilayer supermirror. Base on the matrix method and the newly experiment data, theoretic calculation is done with and without diffusion and oxide layer. Using RSD algorithm, considering the double potential function model and surface oxide layer, we obtain the technics requirement and neutron effective loss efficiency in given conditions of multilayer monochromator which uses the newly coating material CoFe/ TiZr. Calculation results can be as the referrence for the manufacture of multilayer monochromator which uses the newly coating material CoFe/TiZ or theory that optimizes design of multilayer monochromator.

关 键 词：层间扩散 多层膜材料 中子镜单色器 

分 类 号：O571.5[理学—粒子物理与原子核物理]