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超短超强激光的飞速发展,利用超短超强激光加速产生高能质子束成为一个重要的研究课题,在实验室桌面装置上可以在脉冲的强流质子束,可以在核物理和军事科学等领域有着广泛的应用。利用超强超短激光与薄膜靶相互作用,超强超短激光的预脉冲或者前沿脉冲迅速电离薄膜靶的前表面形成预等离子体,主脉冲到达时与预等离子体相互作用,有质动力加速电子并穿透薄膜靶到达靶后形成电子云,电子在穿越薄膜靶的同时把靶后含氢沾染层电离,带有负电的电子云与薄膜靶之间
The rapid development of ultrashort superlattice laser, the use of ultrashort superlattice laser to accelerate the generation of high-energy proton beam has become an important research topic in the laboratory desktop device can be pulsed in a strong stream proton beam can be in nuclear physics and military science The field has a wide range of applications. Using the super short laser and the thin film target interaction, the pre-pulse or front pulse of the super-short laser rapidly ionizes the front surface of the film target to form a pre-plasma. The main pulse arrives and interacts with the pre-plasma, accelerating the mass-momentum Electron and penetrate the thin film target to reach the target to form an electron cloud. The electron passes through the thin film target and ionizes the hydrogen-containing contaminated layer behind the target. The negative charged electron cloud and the thin film target