Yamagiwa M, Koga J, Tsintsadze L N, Ueshima Y, Kishimoto Y
Advanced Photon Research Center, Japan Atomic Energy Research Institute, 1-1-2, Umemidai 8-chome, Kizu-cho, Soraku-gun, Kyoto 619-0215, Japan.
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics. 1999 Nov;60(5 Pt B):5987-90. doi: 10.1103/physreve.60.5987.
Ion acceleration and expansion in the interaction of a relativistically intense short-pulse laser with an underdense plasma layer are investigated. Ion and electron dynamics are studied by a two-dimensional particle-in-cell simulation with the real mass ratio. It is shown that the longitudinal electric field induced by electron evacuation due to a large ponderomotive force or light pressure can accelerate ions to several MeV in the direction of the laser propagation. It is after the laser completely passes through the plasma layer that the ion explosion starts to be significant.
研究了相对论强短脉冲激光与低密度等离子体层相互作用中的离子加速和膨胀。通过具有实际质量比的二维粒子模拟研究了离子和电子的动力学。结果表明，由于大的有质动力或光压导致电子排空所产生的纵向电场，可以将离子沿激光传播方向加速到几兆电子伏特。在激光完全穿过等离子体层之后，离子爆炸才开始变得显著。
