Radiation-Pressure Acceleration of Ion Beams Driven by Circularly Polarized Laser Pulses
Radiation-Pressure Acceleration of Ion Beams Driven by Circularly Polarized Laser Pulses
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DOI：
10.1103/physrevlett.103.245003
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发表时间：
2009-12-11
影响因子：
8.6
通讯作者：
Habs, D.
中科院分区：
文献类型：
--
作者：
Henig, A.;Steinke, S.;Habs, D.
本文报道了用能量为0.7J、峰值强度为5 × 10 ~（19）W/cm ~（2）的强对比度激光脉冲辐照类金刚石薄膜的离子加速实验研究。当激光偏振从线性变为圆形时，观察到电子加热的减少，导致在5.3 nm的最佳箔厚度处的完全电离的碳光谱中的显著峰。二维粒子模拟结果表明，这些C（6+）离子第一次被激光辐射压力以相位稳定的方式加速。
We present experimental studies on ion acceleration from ultrathin diamondlike carbon foils irradiated by ultrahigh contrast laser pulses of energy 0.7 J focused to peak intensities of 5x10(19) W/cm(2). A reduction in electron heating is observed when the laser polarization is changed from linear to circular, leading to a pronounced peak in the fully ionized carbon spectrum at the optimum foil thickness of 5.3 nm. Two-dimensional particle-in-cell simulations reveal that those C(6+) ions are for the first time dominantly accelerated in a phase-stable way by the laser radiation pressure.