论文标题
单发电子射线照相使用激光 - 血浆加速器
Single-Shot Electron Radiography Using a Laser-Plasma Accelerator
论文作者
论文摘要
使用千焦耳，皮秒级激光驱动的激光等离子体加速器证明了静态靶标的接触和投影电子射线照相，作为平均能量为20 meV的相对论电子的来源。在从塑料到钨的材料中探测了高达7.7 g/cm^2的面积密度的物体，并产生了与90微米的射线照相仪。观察到了射线照相对象的激光消融产生的电场的作用，并通过与电场强度变化的成像变化相关的分析表达来很好地描述。
Contact and projection electron radiography of static targets was demonstrated using a laser plasma accelerator driven by a kilojoule, picosecond class laser as a source of relativistic electrons with an average energy of 20 MeV. Objects with areal densities as high as 7.7 g/cm^2 were probed in materials ranging from plastic to tungsten, and radiographs with resolution as good as 90 micrometers were produced. The effects of electric fields produced by the laser ablation of the radiography objects were observed and are well described by an analytic expression relating imaging magnification change to electric field strength.
