激光驱动的快离子在薄壳中的电动力压缩
Laser-driven electrodynamic implosion of fast ions in a thin shell
AI总结：
本文提出利用激光驱动的快电子振荡实现离子在薄壳中的电动力压缩，研究其在高能范围内的加速机制。
摘要：
激光驱动的亚相对论高密度离子流碰撞提供了一种创造极高压缩离子团簇并研究其性质的方法。本文对在由飞秒拍瓦激光脉冲照射的空心球形或圆柱形壳内离子的电动力压缩进行了理论研究。我们提出了一种非常有效的离子加速机制，基于在该场中靠近薄壳的激光加速快电子的振荡，该场具有强电荷分离的自洽场。快电子在壳外侧被强激光脉冲产生。研究表明，当亚微米壳被强度为10^21-10^23 W/cm²的飞秒激光脉冲照射时，离子，特别是质子，可能在压缩阶段被加速到数十至数百MeV的能量水平。
英文摘要：
Collision of laser-driven subrelativistic high density ion flows provides a way to create extremely compressed ion conglomerates and study their properties. This paper presents a theoretical study of the electrodynamic implosion of ions inside a hollow spherical or cylindrical shell irradiated by femtosecond petawatt laser pulses. We propose to apply a very effective mechanism for ion acceleration in a selfconsistent field with strong charge separation, based on the oscillation of laser accelerated fast electrons in this field near the thin shell. Fast electrons are generated on the outer side of the shell under irradiation by the intense laser pulses. It is shown that ions, in particular protons, may be accelerated at the implosion stage to energies of tens and hundreds of MeV when a sub-micrometer shell is irradiated by femtosecond laser pulses with an intensity of 10^21 - 10^23 W cm^-2. .
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