小型单能量X射线源的开发与医疗应用  

Development and Medical Application of Compact Single Energy X-ray Source

作　　者：孟德[1] 李斌[1] 吴岳雷[1] 

机构地区：[1]环境保护部核与辐射安全中心,北京100082

出　　处：《核电子学与探测技术》2013年第12期1563-1567,1571,共6页Nuclear Electronics & Detection Technology

摘　　要：介绍了一种小型单能量X射线源。为了获得稳定的X射线,采用X波段(11.424 GHz)直线加速器加速的多束团电子和Q开关Nd:YAG激光的组合。为了提高X射线通量,采用了激光束循环系统。阐述了激光束循环的原理、小型单能量X射线源的工作原理,以及在医疗应用方面的前景。说明了目前系统的构建状况和实验实施状况,并对当前存在的问题和今后的课题做出总结。A Compton scattering X -ray source which can be used for dual -energy CT is introduced.In orderto realize stable X -ray generation, multi -bunch electron beam from an X -band （11.424 GHz） linac and Q-switch Nd：YAG laser are adopted.And in order to increase X -ray flux, a laser circulation system is adopted.The principle of laser circulation, compact dual -energy X -ray source and the aspect of medical applica -tion are described.The current status of system construction and the experiments are also illustrated .Finally, asummary of current problems and future research are made .

关 键 词：小型单能量X射线源 X波段直线加速器 激光束循环系统 医疗应用 

分 类 号：TL99[核科学技术—核技术及应用]