相对论性laser -固体相互作用中MeV X射线剂量的最大化
Maximizing MeV x-ray dose in relativistic laser-solid interactions
摘要：
在激光与固体相互作用中产生的韧致辐射X射线可以用作高能量密度科学的光源。我们目前的电子和X射线光谱从粒子在细胞和蒙特卡罗模拟，不同的激光脉冲强度和持续时间在固定的能量为200 $\,$ J. Superponderomotive电子温度观察在低强度，一个新的温度缩放，取决于脉冲持续时间和密度尺度长度。短的高强度脉冲在自生磁场演化之前产生低发散电子束，从而产生更向前的MeV x射线。
英文摘要：
Bremsstrahlung x-rays generated in laser-solid interactions can be used as light sources for high-energy-density science. We present electron and x-ray spectra from particle-in-cell and Monte Carlo simulations, varying laser pulse intensity and duration at fixed energy of 200$\,$J. Superponderomotive electron temperatures are observed at low intensity; a new temperature scaling is given that depends on pulse duration and density scale length. Short, high-intensity pulses create low-divergence electron beams before self-generated magnetic fields evolve, resulting in more forward-going MeV x-rays.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
