激光质子照相特性模拟研究  

Monte-Carlo study of radiography with laser-produced proton beam

作　　者：滕建[1] 洪伟[1] 赵宗清[1,2] 巫顺超[1,2] 秦孝尊[1,3] 何颖玲[1] 谷渝秋[1] 丁永坤[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,绵阳621900 [2]清华大学工程物理系,北京100084 [3]国防科技大学物理系,长沙410072

出　　处：《物理学报》2009年第3期1635-1641,共7页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10775121;10774133);等离子体物理国家级重点实验室基金(批准号:9140C6802030603)资助的课题~~

摘　　要：基于超短激光驱动的质子源的照相技术是传统质子照相技术的发展.使用FLUKA蒙特卡罗(MC)程序,依据激光质子源的特点,对质子照相进行了定量的模拟研究.通过对三种典型情况的模拟(半平面靶及台阶靶,激光惯性约束聚变研究用黑腔,磁场网格照相)分析了影响质子照相的主要物理因素,表明了激光质子照相具有对界面敏感,高空间分辨,对磁场敏感的优点.Radiography using ultra-short laser-produced proton beams is a development of traditional proton radiography. According to the characteristic of laser-produced proton beam,using FLUKA Monte-Carlo program,the quantitative simulation of proton radiography is studied. From the simulation of three typical cases （half-plane target and ladder target,hohlraum with a plastic ball in it,and detection of magnetic field with mesh method）,the main physical factors that effect the proton radiography are discussed. The advantage of radiography of laser-produced protons,such as high sensitivity to boundary,high spatial resolution,and high sensitivity to magnetic field,is demonstrated.

关 键 词：超短激光 质子照相 蒙特卡罗 

分 类 号：TN24[电子电信—物理电子学]