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arXiv 1008.1685physics.plasm-ph
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辐射反应对辐射压加速的影响

Radiation Reaction Effects on Radiation Pressure Acceleration

M. Tamburini, F. Pegoraro, A. Di Piazza, C. H. Keitel, A. Macchi

摘要:

从理论上研究了辐射反应(RR)对超强激光脉冲加速薄等离子体箔的影响。一个简单的合适的近似的朗道-Lifshitz方程的RR力和一个新的蛙跳推其列入在细胞中的粒子模拟。对激光脉冲的线偏振和圆偏振进行了模拟和比较。据发现,在强度超过$10^{23} \Wcm$的辐射反作用力强烈影响的动态线性偏振激光脉冲,降低最大离子能量,但也光谱的宽度。相反,对于圆偏振激光脉冲,只要激光脉冲不穿透箔,就没有发现显著的效果。

英文摘要:

Radiation reaction (RR) effects on the acceleration of a thin plasma foil by a superintense laser pulse in the radiation pressure dominated regime are investigated theoretically. A simple suitable approximation of the Landau-Lifshitz equation for the RR force and a novel leapfrog pusher for its inclusion in particle-in-cell simulations are provided. Simulations for both linear and circular polarization of the laser pulse are performed and compared. It is found that at intensities exceeding $10^{23} \Wcm$ the radiation reaction force strongly affects the dynamics for a linearly polarized laser pulse, reducing the maximum ion energy but also the width of the spectrum. In contrast, no significant effect is found for circularly polarized laser pulses whenever the laser pulse does not break through the foil.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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