强吸收介质内部低Z材料结构的X射线显微成像研究  

X-ray microscopic imaging of low Z material wrapped by strongly absorbing medium

作　　者：师绍猛[1] 陈荣昌[1] 薛艳玲[1] 任玉琦[1] 杜国浩[1] 邓彪[1] 谢红兰[1] 肖体乔[1] 

机构地区：[1]中国科学院上海应用物理研究所,上海201800

出　　处：《物理学报》2008年第10期6319-6328,共10页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10275087和10705020);上海市自然科学基金(批准号:02ZF14116);上海市科学技术发展基金(批准号:022261023)资助的课题~~

摘　　要：惯性约束核聚变靶室靶丸位置的原位无损检测是目前的研究热点和难点.针对此需求,建立了强吸收介质包裹的低Z材料X射线显微成像物理模型.通过计算机模拟和实验,较为系统地考察了光子能量、成像距离以及强吸收介质尺度等参量对成像质量的影响.结果表明,利用X射线相衬成像技术来实现惯性约束核聚变靶室靶丸的高分辨无损检测是可行的.It is difficult for the nondestructive detection of inertial fusion capsule. Based on this requirement we constructed a physical model of low Z material wrapped by strongly absorbing medium. By simulation and experiments, we investigate the effect of some factors on phase contrast imaging quality, such as X-ray energy, distance of object to detector, thickness of strongly absorbing materials and so on. We find it feasible to realize the high resolution and nondestructive detection of inertial fusion capsule by Xray phase contrast imaging.

关 键 词：X射线显微 位相衬度 核聚变靶 无损检测 

分 类 号：O434.12[机械工程—光学工程]