康普顿散射在材料无损评价中的应用前景  

Review of Application of Compton Scattering to Nondestructive Evaluation of Materials

作　　者：李志海[1] 周上祺[1] 刘守平[1] 石泉[1] 邱绍宇[2] 李聪[2] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400030 [2]中国核动力研究设计院核燃料及材料国家级重点实验室,四川成都610041

出　　处：《重庆大学学报（自然科学版）》2005年第10期31-35,共5页Journal of Chongqing University

基　　金：中国核动力研究设计院核燃料及材料国家级重点实验室资助项目(2004-08)

摘　　要：康普顿散射是X射线(或γ射线)与物质发生相互作用时波长变长的散射,也称不相干散射.研究表明,散射线的波长随散射角的变化而有规律的变化,其散射强度和被散射体的原子序数和电子密度有关.介绍了康普顿散射在密度测量、厚度测量方面的应用,讨论了利用康普顿散射成像来进行缺陷检测等方面的问题,同时介绍了康普顿散射在安全检测、医药技术、食品加工等其他领域的应用.展望了康普顿散射在材料无损评价中的应用前景.Compton Scattering occurs when the incident x-ray （or γ-ray） photon ejects a electron x-ray photon of longer wavelength is scattered from the atom, It is proved that the scattering wavelength varies with the scattering angle, and the scattering intensity depends on the atomic number and electron density of the scatted volume. The authors introduce the main applications of Compton scattering-density measurement, thickness measurement and flaw detection with Compton scatter imaging and other applications in the field of security testing, medicine technology and food processing. Review of application of Compton scattering to nondestructive evaluation of materials is also given.

关 键 词：康普顿散射 康普顿散射成像 无损评价 

分 类 号：TG115.22[金属学及工艺—物理冶金]