%0 Journal Article
%T Principles of X-ray diffraction enhanced imaging<br>衍射增强成像原理
%A Zhu Pei-Ping
%A Yuan Qing-Xi
%A Huang Wan-Xia
%A Wang Jun-Yue
%A Shu Hang
%A Wu Zi-Yu
%A Xian Ding-Chang
%A <br>朱佩平
%A 袁清习
%A 黄万霞
%A 王寯越
%A 舒航
%A 吴自玉
%A 冼鼎昌
%J 物理学报
%D 2006
%I 
%X The interactions between X-ray and the sample and crystals were investigated, and the influence of small angle scattering on images was emphatically analyzed in diffraction enhanced imaging in this paper. Not only were the additional noise term caused by small angle scattering introduced, and more general DEI equation established, but also expressions of absorption contrast, extinction contrast and refraction contrast were given for the peak image and the middle slope image. With the new DEI equation, the contrasts of two kinds of resultant images (apparent absorption image and refraction image) were discussed.
%K phase contrast imaging
%K synchrotron radiation
%K crystal diffraction
%K radiography<br>相位衬度成像
%K 同步辐射
%K 晶体衍射
%K X射线照相术
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=51B0B295236DF9E2&yid=37904DC365DD7266&vid=E514EE58E0E50ECF&iid=38B194292C032A66&sid=4997AFD17F6FADE1&eid=4759DE41370E2E7A&journal_id=1000-3290&journal_name=物理学报&referenced_num=3&reference_num=23