“轻帆”加速度再探
"Light Sail" Acceleration Revisited
摘要：
通过解析建模和粒子模拟研究了超强圆偏振激光脉冲辐射压力加速超薄箔靶的动力学。通过解决自诱导的透明度和电荷分离效应，它示出，对于“最佳”值的箔厚度只有一个薄层在后侧加速辐射压力。简单的“光帆”模型对每个核子的能量给出了很好的估计，但高估了激光能量转化为单能离子的效率。
英文摘要：
The dynamics of the acceleration of ultrathin foil targets by the radiation pressure of superintense, circularly polarized laser pulses is investigated by analytical modeling and particle-in-cell simulations. By addressing self-induced transparency and charge separation effects, it is shown that for "optimal" values of the foil thickness only a thin layer at the rear side is accelerated by radiation pressure. The simple "Light Sail" model gives a good estimate of the energy per nucleon, but overestimates the conversion efficiency of laser energy into monoenergetic ions.
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