物理学报2012，Vol.61Issue(1)：270-275,6.
超短强激光与固体薄膜靶作用产生keV相干X射线数值模拟研究
Numerical study on coherent keV x ray generation by the interaction of ultra-short intense lasers with thin solid foils
摘要
Abstract
The scheme of x ray generation by the interaction of ultra-short intense laser puls with two thin solid foils is re-investigated by one-dimensional numerical simulation.Attention is paid particularly to the effects of the thickness and the density distribution of the source target on the frequency spectrum and the conversion efficiency of the produced x ray emission,where the source target provides a relativistic electron layer.When the thickness of the source target is comparable to or smaller than the wavelength of x rayλ/4νx~2 （λis the wavelength of the incident laser）,quasi-monochromatic x ray spectrum can be generated.Otherwise the spectrum will be broadened significantly and the maximum frequency will decrease rapidly.In addition,the presence of inhomogeneous preplasma in front of the foil will induce a similar change of the spectrum.关键词
相对论电子层/Doppler频移/相干X射线Key words
relativistic electron layer/Doppler frequency shift/coherent x ray分类
数理科学引用本文复制引用
贾倩倩,王伟民,董全力,盛政明..超短强激光与固体薄膜靶作用产生keV相干X射线数值模拟研究[J].物理学报,2012,61(1):270-275,6.基金项目
国家自然科学基金（批准号：10734130 （）
10935002） （）
国家高技术研究发展计划（863计划） （）
国家重点基础研究发展计划（批准号：2007CB815100 （）
2007CB310406）资助的课题~~ （）
