摘要
基于SILEX-Ⅰ激光器,利用单光子计数型电荷耦合器件,在超强超短脉冲激光与高纯度Au靶相互作用中,通过改变入射激光的能量,测量了不同激光功率密度下的Au等离子体L-X射线发射谱。实验结果表明:在超强超短脉冲激光作用下,Au等离子体L-X射线发射过程中由于高速电子存在,会诱发很强的热辐射和轫致辐射,并且Au等离子体特征L-X射线发射强度、热辐射和轫致辐射随激光功率密度增加而增强。
Experiments on interaction between intense femtosecond laser and high-purity gold were performed on the SILEX-Ⅰ laser facility.The single-photon counting X-ray CCD camera was used to measure the L-shell X-ray emission from Au plasma at different laser power densities.The experimental results show that in the process of Au plasma X-ray emission,the high-speed electrons result in the intense bremsstrahlung and thermal radiation,and all the radiation intensity increases with the laser power density.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2012年第8期1896-1900,共5页
High Power Laser and Particle Beams
基金
国家自然科学基金项目(10774149)
等离子体物理国家级科技重点实验室基金项目(51480020104ZK5101)
高温高密度等离子体物理重点实验室基金
