REG: Soft X-Ray Spectrometer

高能相互作用 飞秒至皮秒激光 固体靶脉冲提供了 一个明亮的不连贯的软光源 X光片 在该工程 研究设备补助金，两项 描述了实验， 利用能量的相互作用 飞秒至100 ps脉冲 坚实的目标。 这些 实验需要使用软 X射线光谱仪（~10- 400 A范围） 来监测热等离子体发射。 第一个实验的目的是 高效、高平均功率 产生0.1-1 KeV X射线， 最终应用于软X射线 平版印刷 通过制备 适当的形状和大小短 等离子体密度标度 调整输入偏振， 脉冲长度和入射角 约2-20 mJ的短激光脉冲 能量，产生0.1-1 KeV X射线效率至少为10% 有望 这将提供一个 扩展到 甚高重复频率激光器 系统. 的第二个用途是 光谱仪将监测 软X射线辐射的来源 飞秒激光产生的等离子体。 这在以下方面有应用： 超短脉冲X射线的产生 射线源，并在研究 独特、高密度、非理想 相互作用中产生的等离子体。

The interaction of high energy femtosecond through picosecond laser pulses with solid targets provides a bright source of incoherent soft X-rays. In this Engineering Research Equipment Grant, two experiments are described which employ the interaction of energetic femtosecond through 100 ps pulses with solid targets. These experiments require the use of soft X-ray spectrometer (~10-400A range) to monitor the hot plasma emission. The first experiment has as its aim the efficient and high average power generation of 0.1-1 KeV X-rays for eventual application to soft X-ray lithography. By preparing appropriately shaped and sized short plasma density scalelengths and adjusting the input polarization, pulse length, and incidence angle of a short laser pulse of ~2-20 mJ energy, the generation of 0.1-1 KeV X-rays with at least 10% efficiency is expected. This will provide a proof-of-principle for scaling to very high repetition rate laser systems. A second use for the spectrometer will be the monitoring of soft X-ray emission from femtosecond laser-produced plasmas. This has applications in the production of an ultrashort pulse X- ray source and in the study of the unique, high-density, non-ideal plasmas produced in the interaction.