超短超强激光脉冲作用下的M0等离子体X射线辐射
X-ray Radiation in Interaction of Ultra-short and Ultra-intense Laser-pulse with Mo Target
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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.Abstract: 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.
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