论文标题
高效的水窗X射线X射线从纳米线阵列靶标被飞秒激光脉冲照射
High-efficiency water-window x-ray generation from nanowire array targets irradiated with femtosecond laser pulses
论文作者
论文摘要
我们证明了从飞秒激光脉冲辐射的聚乙烯纳米阵列靶标发射的高效产生的水窗口软X射线排放，其强度为4*10^19 w/cm^2。实验结果表明，与平面靶标相比，纳米线阵列靶标的水窗X射线排放的数量级以上。从激光到水窗X射线的最高能量转换效率为0.5％/sr，它来自纳米线最长的靶标。在粒子中的模拟和原子动力学代码的支持下，讨论了导致高转化效率的物理学。
We demonstrate the high-efficiency generation of water-window soft x-ray emissions from polyethylene nanowire array targets irradiated by femtosecond laser pulses at the intensity of 4*10^19 W/cm^2. The experimental results indicate more than one order of magnitude enhancement of the water-window x-ray emissions from the nanowire array targets compared to the planar targets. The highest energy conversion efficiency from laser to water-window x-rays is measured as 0.5%/sr, which comes from the targets with the longest nanowires. Supported by particle-in-cell simulations and atomic kinetic codes, the physics that leads to the high conversion efficiency is discussed.
