Use of X-ray probing to analyse High Energy Density Plasmas created in convergent shockwave experiments

使用 X 射线探测分析会聚冲击波实验中产生的高能量密度等离子体

• 批准号: 2902939
• 金额: --
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2902939
• 关键词: Use; ray; probing; analyse; Energy

The main interest of the PhD is to explore new, efficient methods of obtaining high pressures/high energy density states through pulsed power driven convergent shockwaves. To do this student will:- Utilise MACH, Cepage and M3 to explore use of pulsed power driven exploding wire arrays to make convergent shockwaves in 2 and 3D (cylindrical, semi cylindrical, spherical, hemi spherical and conical section)- Use optical diagnostics including high speed framing and streak imaging to optimise position of targets within the wire arrays- Perform scaled experiments at ESRF and/or other Light Sources to directly observe target compression via radiography- Develop methods to integrate portable X-pinch sources to MACH, Cepage and M3 to perform single shot radiography potentially utilising X-ray optics.- If time allows to explore the use of diffraction and potentially X-ray Thompson scattering with the targets to directly observe phase changes, density and temperature. In each case the experimental results will be compared to theory and simulations utilising the Gorgon code in order to help better determine the conditions created inside the targets, and through synthetic diagnostics better plans the next set of measurements.

PHD的主要兴趣是探索通过脉冲功率驱动会聚激波获得高压/高能量密度状态的新的、有效的方法。为此，学生将：-利用马赫、塞佩奇和M3探索使用脉冲功率驱动爆炸丝阵列以产生二维和三维(圆柱形、半圆柱形、球形、半球形和圆锥形截面)的会聚冲击波-使用包括高速成帧和条纹成像的光学诊断来优化线阵中目标的位置-在ESRF和/或其他光源上执行定标实验，通过射线照相直接观察目标压缩-开发方法将便携式X-箍缩源集成到马赫，如果时间允许的话，探索利用目标的衍射和潜在的X射线汤普森散射来直接观察相变、密度和温度。在每种情况下，实验结果都将与使用Gorgon代码的理论和模拟进行比较，以帮助更好地确定目标内部产生的条件，并通过合成诊断更好地计划下一组测量。