Influence of target thickness on the generation of high-density ion bunches by ultrashort circularly polarized laser pulses
Influence of target thickness on the generation of high-density ion bunches by ultrashort circularly polarized laser pulses
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DOI：
10.1063/1.2977485
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发表时间：
2008-09
影响因子：
2.2
通讯作者：
Y. Yin;Wei Yu;M. Yu;A. Lei;Xiaoqing Yang;H. Xu;V. Senecha
中科院分区：
文献类型：
--
作者：
Y. Yin;Wei Yu;M. Yu;A. Lei;Xiaoqing Yang;H. Xu;V. Senecha
Ion acceleration by ultrashort circularly polarized laser pulse in a solid-density target is investigated using two-dimensional particle-in-cell simulation. The ions are accelerated and compressed by the continuously extending space-charge field created by the evacuation and compression of the target electrons by the laser light pressure. For a sufficiently thin target, the accelerated and compressed ions can reach and exit from the rear surface as a high-density high-energy ion bunch. The peak ion energy depends on the target thickness and reaches maximum when the compressed ion layer can just reach the rear target surface. The compressed ion layer exhibits lateral striation which can be suppressed by using a sharp-rising laser pulse.
