摘要
高能工业CT采用 9MeV电子加速器产生轫致辐射 ,利用高能X射线能够有效地穿透物质以及不同物质对射线吸收和散射不同这一原理来检查物体内部缺陷或内部结构。加速器电子束的焦点、X射线的最高能量、X射线剂量及均匀性与工业CT成像的质量和速度密切相关 ;对探测器的电子线路部分进行的X射线屏蔽关系到探测器的使用寿命。X射线测量结果表明 ,所用
Industrial computerised tomography (CT) adopts electron accelerator to produce the high energy X-ray bremsstrahlung, and makes use of the principle of different absorption coefficient and scattering coefficient when the X-ray cuts through different materials to check the internal blemish or internal structure of the material. The quantity and the speed of creating image of the industrial CT closely relate to the accelerator's focus, the highest X-ray energy, X rays dose and dose uniformity. Protecting the electronics circuit of the detector against X-ray relates to the detector's service life. The X rays measuring results given in this article show that the 9 MeV linear accelerator (LINAC) can satisfy the requirements of high energy industrial CT for checking the material structure and blemish.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2004年第6期805-808,共4页
High Power Laser and Particle Beams
基金
国防科技基础研究基金资助课题
