国际高能脉冲X射线闪光照相加速器的发展综述

Review of development of high energy pulsed X-ray accelerators for flash radiography

高能脉冲X射线闪光照相加速器在高性能爆轰流体动力学实验研究中具有重要应用,是牵引高功率脉冲技术发展的重大需求之一。综述了射频直线加速器、电子感应加速器、基于高压脉冲源和高功率二极管的强流脉冲功率加速器3大类、5种闪光照相加速器技术路线的主要特点、代表性装置,对比了几种技术路线的特点,展望了未来发展趋势:一是大力发展共轴多脉冲X射线分幅照相技术;二是采用全固态脉冲功率组件实现加速器紧凑化、小型化和可移动。

Flash radiographic accelerators with high energy pulsed X-ray have important applications in hydrodynamic experiments,which is recognized as an important motivation to drive the development of the pulsed power technology.This paper reviews the advantages,typical facilities,and technical weaknesses of three kinds of flash X-ray radiographic accelerators,including the radio frequency linac,electron induction accelerator,and highcurrent accelerators driven by the high-voltage pulsed-power source and diodes.The technology trends for the future are summarized,as follows:(1)to develop accelerators capable of producing co-axial multi-pulse X-ray;(2)to develop compact,small and mobile accelerators by employing all-solid-state pulse power components.