摘要
高分辨率X射线掠入射望远镜的研究和应用越来越广泛。镜片刚体运动误差、表面误差、表面粗糙度、表面散射和衍射是影响X射线成像望远镜成像质量的主要因素。详细分析了刚体运动误差和低频表面误差对成像质量的影响;使用空间解析几何学的二次曲面方程建立WolterI、II型X射线掠入射望远镜镜片的数学模型,降低光线追踪的计算复杂度;借助自主开发的光学仿真软件分析了国内研制的X射线成像望远镜的刚体运动误差和低频表面误差对成像质量的影响,计算出像点艾里斑半径均方根值随误差变化的增长率,对工程上提出合理的制造公差的误差容限有重要的指导意义。
The research and application of high resolution X-ray incidence telescope is more and more extensive.Rigid body motion,surface errors,surface roughness,surface scattering and diffraction are mainly reasons which affect image quality of the X-ray imaging telescopes.The effects of the rigid body motions and low frequency surface errors on the image quality were analyzed.Quadratic equations were used to build the mathematical model of the Wolter type I and II X-ray telescopes and reduce the computational complexity of ray tracing.With the help of a self-developed optical surface analysis code,the effects of the perturbations of the mirrors on the image quality was analyzed and the growth of the image spot formed by deformed telescopes was calculated,this is important for giving the reasonable fabrication tolerance.
出处
《科学技术与工程》
2010年第13期3303-3307,共5页
Science Technology and Engineering
基金
国家自然科学基金(10979065)资助
