蜻蜓眼睛光栅

介绍了蜻蜓眼睛光栅的制作过程.通过对蜻蜒眼睛光栅的衍射图样进行分析、测量和计算,从而推出蜻蜒眼睛光栅的结构和光栅常量,推测结果与电镜下拍到的结果基本一致.用3片互成60°的普通一维光栅做成二维三重光栅,通过实验和计算机编程2种方法得到的衍射图样与蜻蜒眼睛光栅的衍射图样非常吻合.     

Diffusion Monte Carlo calculations ofthree-body systems

The application of the diffusion Monte Carlo algorithm in three-body systems is studied. We develop a program and use it to calculate the property of various three-body systems. Regular Coulomb systems such as atoms, molecules, and ions are investigated. The calculation is then extended to exotic systems where electrons are replaced by muons. Some nuclei with neutron halos are also calculated as three-body systems consisting of a core and two external nucleons. Our results agree well with experiments and others' work.