Density measurement of shock compressed foam using two-dimensional x-ray radiography.
Density measurement of shock compressed foam using two-dimensional x-ray radiography.
复制标题
使用二维 X 射线照相技术测量冲击压缩泡沫的密度。
DOI：
10.1063/1.2982237
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
R. Freeman
中科院分区：
文献类型：
--
作者：
S. Le Pape;A. MacPhee;D. Hey;P. Patel;A. Mackinnon;M. Key;J. Pasley;M. Wei;Sophia N Chen;T. Ma;F. Beg;N. Alexander;R. Stephens;D. Offerman;A. Link;L. VanWoerkom;R. Freeman
我们使用球状弯曲的石英晶体在泡沫介质中成像激光产生的冲击波。泡沫靶的密度为0.16g/cm(3)，厚度为150微米，铝/铜推进器驱动冲击波。该实验在劳伦斯利弗莫尔国家实验室的泰坦设施中进行，使用2 ns、250J的激光脉冲来压缩泡沫靶，并使用短脉冲(10ps，350J)来产生4.5keV的明亮的TiKαX射线源来对受冲击的靶进行X射线照相。所使用的晶体提供了高分辨率(约20微米)的冲击压缩泡沫的单色图像。
We have used spherically bent quartz crystal to image a laser-generated shock in a foam medium. The foam targets had a density of 0.16 g/cm(3) and thickness of 150 microm, an aluminum/copper pusher drove the shock. The experiment was performed at the Titan facility at Lawrence Livermore National Laboratory using a 2 ns, 250 J laser pulse to compress the foam target, and a short pulse (10 ps, 350 J) to generate a bright Ti K alpha x-ray source at 4.5 keV to radiograph the shocked target. The crystal used gives a high resolution (approximately 20 microm) monochromatic image of the shock compressed foam.