Hard x-ray production from high intensity laser solid interactions (invited)
Hard x-ray production from high intensity laser solid interactions (invited)
复制标题
高强度激光固体相互作用产生硬X射线（特邀）
DOI：
--
复制
发表时间：
1999
期刊：
影响因子：
--
通讯作者：
S. Wilks
中科院分区：
文献类型：
--
作者：
M. Perry;J. Sefcik;T. Cowan;S. Hatchett;A. L. Hunt;M. Moran;D. Pennington;R. Snavely;S. Wilks
强激光(>；1021 W/cm~2)驱动的硬X射线源为传统电子加速器韧致辐射源提供了一种新的替代方案。这些激光驱动源为多轴视图提供了相当简单的设计和成本优势，并且具有比加速器源可实现的更高的空间和时间分辨率的潜力。我们已经开始在LLNL使用Petawatt激光系统进行一系列实验，以确定这些光源在放射照相应用中的潜力。获得了扩展到20 MeV的绝对定标光谱和通过ρr⩾150 g/cm~2的高分辨率射线照相。本课程将讨论这些源的物理特性，以及提供射线照相应用所需的剂量水平所需的比例关系和激光技术。将讨论激光产生的电子和光子的诊断问题。
Intense laser (>1021 W/cm2) driven hard x-ray sources offer a new alternative to conventional electron accelerator bremsstrahlung sources. These laser driven sources offer considerable simplicity in design and cost advantage for multiple axis views and have the potential for much higher spatial and temporal resolution than is achievable with accelerator sources. We have begun a series of experiments using the Petawatt laser system at LLNL to determine the potential of these sources for radiography applications. Absolutely calibrated spectra extending to 20 MeV and high resolution radiographs through a ρr⩾150 g/cm2 have been obtained. The physics of these sources and the scaling relationships and laser technology required to provide the dose levels necessary for radiography applications will be discussed. Diagnostics of the laser produced electrons and photons will be addressed.