光学精密工程2017，Vol.25Issue(11)：2829-2834,6.DOI:10.3788/OPE.20172511.2829
轻气炮加载下晶格响应的实时X射线衍射测量
Real-time X-ray diffractometry for lattice response measurement under gas-gun loading
摘要
Abstract
The microscopic response measurement of material dynamics was researched experimentally under the loading conditions of gas gun loading .Based on a flash X-ray source with the half width of 25 ns ,a real-time X-ray diffraction diagnostic system was developed by using integral record devices . The measuring principle of X-ray diffraction system was introduced .Due to the duration of shocked state in the probed region and the output timing jitter of the X-ray source ,the difficulty of system synchronization for X-ray pulse and shock wave in arriving probe region was discussed .Finally ,the method to realize the synchronization of the X-ray pulse with the shock wave was achieved by utilizing a fine multilayered target and a piezoelectric pin with ns response time , and a real time X-ray diffraction image of LiF in the peak compressed state was obtained under gas-gun loading .Experimental results indicate that the lattice compression of LiF is 1 .73% w hen shocked pressure is 2 .33 GPa .The experimental technique provides an effective means for research of the microscopic response under a gas-gun loading experiment .关键词
实时X射线衍射测量/材料动力学/微观响应/晶格形变/轻气炮加载Key words
real-time X-ray diffraction/kinetics of material/microscopic response/lattice deformation/gas-gun loading分类
数理科学引用本文复制引用
唐波,黑东炜,马戈,盛亮,周海生,刘旭,夏惊涛,罗剑辉,魏福利..轻气炮加载下晶格响应的实时X射线衍射测量[J].光学精密工程,2017,25(11):2829-2834,6.基金项目
装备预先研究基金资助项目(No.51311060503) （No.51311060503）
