Modelling the effects of the radiation reaction force on the interaction of thin foils with ultra-intense laser fields
Modelling the effects of the radiation reaction force on the interaction of thin foils with ultra-intense laser fields
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DOI：
10.1088/1361-6587/aab97d
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发表时间：
2018-03
影响因子：
2.2
通讯作者：
M. Duff;R. Capdessus;D. Sorbo;C. Ridgers;M. King;P. McKenna
中科院分区：
文献类型：
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作者：
M. Duff;R. Capdessus;D. Sorbo;C. Ridgers;M. King;P. McKenna
研究了辐射反作用力（RR）对承受辐射压力加速（RPA）的薄箔的影响。使用QED粒子模拟，RR力的影响，集体电子动力学的目标内，可以检查。RR力的大小被发现是强烈依赖于目标的厚度，导致可以在宏观尺度上观察到的效果，如所发射的辐射和目标动态的分布的变化。这表明，这些参数可以控制在多PW激光设备的实验。此外，RR力的影响的特征在于在平均辐射发射角方面。我们提出了一个分析模型，首次描述了RR力对RPA“光帆”区域内集体电子动力学的影响。这个模型的预测可以在未来的实验中进行测试，超高强度激光与固体靶相互作用。
The effects of the radiation reaction (RR) force on thin foils undergoing radiation pressure acceleration (RPA) are investigated. Using QED-particle-in-cell simulations, the influence of the RR force on the collective electron dynamics within the target can be examined. The magnitude of the RR force is found to be strongly dependent on the target thickness, leading to effects which can be observed on a macroscopic scale, such as changes to the distribution of the emitted radiation and the target dynamics. This suggests that such parameters may be controlled in experiments at multi-PW laser facilities. In addition, the effects of the RR force are characterized in terms of an average radiation emission angle. We present an analytical model which, for the first time, describes the effect of the RR force on the collective electron dynamics within the ‘light-sail’ regime of RPA. The predictions of this model can be tested in future experiments with ultra-high intensity lasers interacting with solid targets.