【摘要】 本文用二维粒子模拟方法研究了超强超短脉冲激光与圆形等离子体薄靶相互作用中产生的高能离子.模拟研究结果表明,在圆形等离子体薄靶后表面所产生的高能离子,角分布较小,定向性好,能获得很高的能量,并且等离子体薄靶的形状对高能离子的产生和会聚有一定地影响.更多还原

【Abstract】 The simulation method of Particle-in-Cell(PIC) is applied for studying fast ion bunch contraction problem caused by the interaction of ultraintense laser pulse and circle concave plasma target.The simulation results show that the energetic ions from the rear circle concave plasma target have a rather smaller angular distribution and accelerated to higher energy.The result of this research indicated that the change of the plasma target shape directly affects the degree of accelerated ion bunch contraction.更多还原