超短超强激光脉冲作用下的Mo等离子体X射线辐射(英文)  

X-ray Radiation in Interaction of Ultra-short and Ultra-intense Laser-pulse with Mo Target

作　　者：徐秋梅[1,2] 杨治虎[1] 杜树斌[3] 杨兆锐[4] 

机构地区：[1]中国科学院近代物理研究所,甘肃兰州730000 [2]中国科学院研究生院,北京100049 [3]中国原子能科学研究院核物理研究所,北京102413 [4]西北师范大学物理与电子工程物理学院,甘肃兰州730000

出　　处：《原子核物理评论》2011年第2期241-244,共4页Nuclear Physics Review

基　　金：National Natural Science Foundation of China(10774149)~~

摘　　要：在SILEX-1激光器上,利用光子计数型CCD测量了超短超强激光束与高纯度Mo相互作用而产生的发射谱。实验发现,在超短超强激光脉冲作用下,Mo等离子体辐射KαX射线,这一过程伴随很强的热辐射和轫致辐射。Mo等离子体KαX射线辐射强度、热辐射和轫致辐射随激光功率密度增加而增强。Using a Single-photon-counting CCD,X-ray emission spectra of high purity Mo irradiated by ultra-short and ultra-intense laser pulse was firstly detected.The experiment was carried out with the SILEX-1 laser facility.The experimental results show that,for Mo target,characteristic K-shell emission（Kα） is observed in the 0.23—2.32 J energy range in addition to a broadband bremsstrahlung background,and the X-ray radiation intensity,thermal radiation and bremsstrahlung increase with enhancement of the laser power density.

关 键 词：光子计数型CCD 激光 X射线 

分 类 号：O53[理学—等离子体物理]