脉冲X光照相在微物质喷射诊断中的应用  

Flash X-Ray Radiography for Diagnosing the Ejecta from Shocked Metal Surface

作　　者：叶雁[1] 李军[1] 朱鹏飞[1] 钱伟新[1] 刘振清[1] 王晓[1] 李欣竹[1] 李作友[1] 李泽仁[1] 钟杰[1] 

机构地区：[1]中国工程物理研究院流体物理研究所,四川绵阳621900

出　　处：《高压物理学报》2013年第3期398-402,共5页Chinese Journal of High Pressure Physics

基　　金：国家空间碎片专题研究基金(KJSP09203)

摘　　要：脉冲X光照相是诊断强冲击载荷下金属材料微物质喷射的重要方法,金属材料的表面结构对微物质喷射的影响一直是数值模拟和实验研究主要方向。为此组建了由商用脉冲X光机、X光照相接收系统和时序控制同步系统组成的测试系统,研究了真空条件下和0.1MPa下锡样品表面不同刻槽深度对微物质喷射量的影响。动态实验结果表明,真空条件下锡样品刻槽类微物质喷射具有前端密度小、后端密度大的特点,微物质喷射量和区域宽度随刻槽深度的增加而增加,而在0.1MPa下微物质喷射出现前端慢化和喷射区域明显变狭窄的物理图像。The flash X-ray radiography is an important diagnostic tool for the ejecta from shocked metal surface. The influence of metal surface characteristics on the ejecta is a main aspect of numerical simulations and experiments on ejecta phenomena from shocked metal surface. A commercial flash X-ray tube, a X-ray camera and high accuracy synchronization timing system were used to establish a system of ejecta diagnosis. The radiographs of ejecta from the tin targets with different depths of grooves were captured and analyzed. The experimental results showed that （1） the mass ejection of tin targets with grooves presented the quasi-multilayer in vacuum; （2） the zone width and ejecta mass increased with the depth of target grooves in vacuum; （3） the region width and ejecta mass decreased as in gas pressure of 0. 1 MPa.

关 键 词：微射流 微物质喷射 脉冲X光照相 沟槽结构 

分 类 号：TB877.1[一般工业技术—摄影技术] O384[理学—流体力学]