超短超强激光脉冲作用下的M0等离子体X射线辐射

原子核物理评论 , 2011, 28(2): 241-244.

超短超强激光脉冲作用下的M0等离子体X射线辐射

徐秋梅 ^1, , 杨治虎 ^2, , 杜树斌 ^3, , 杨兆锐 ^4,

1.中国科学院近代物理研究所,甘肃兰州730000;中国科学院研究生院,北京100049

2.中国科学院近代物理研究所,甘肃兰州,730000

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

基金项目: 国家自然科学基金资助项目(10774149)

关键词：光子计数型CCD , 激光 , X射线

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

Keywords： single-photon-counting CCD , laser , X-ray

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.

参考文献

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