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中文摘要：
本文提出采用了强激光与细锥形靶作用,产生大量定向高能电子,用于快点火激光聚变方案研究.通过PIC模拟,研究了细锥靶和激光脉冲的各项参数,对产生高能电子的影响.模拟发现,细锥靶开口10时能够产生较多的高能电子,当开口角度逐渐增大时,高能电子的能量和数目都有一定程度下降.若为细锥靶加上预等离子体,产生的高能电子的数目将大大提高,而最高的电子能量将会下降.中等能量的电子加速主要由于激光有质动力加速,而高能量的电子加速主要由于电子感应加速.随着激光脉宽的增加,高能电子的数量直线上升.
英文摘要：
It is proposed that with a mini-cone target, an enormous number of high-energy collimated electrons can be produced, which may be used for fast ignition research. The effect of different laser and cone target diameters on high-energy electrons are studied with twodimensional particle-in-cell simulations. When the open angle of the mini-cone is 10 degree, the number of generated hot electrons is relatively larger. With the increase of the open angle, both the energy and number of hot electrons decrease. When preplasma is added to the cone surface, the amount of hot electrons increases, while the peak energy of the hot electrons decreases. With the increase of the laser pulse duration, the number of high-energy electrons increases linearly.
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