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arXiv 1901.08017physics.plasm-ph
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laser -QED体系中的能量吸收

Energy absorption in the laser-QED regime

Alex F Savin, Aimee J Ross, Ramy Aboushelbaya, Marko W Mayr, Ben Spiers, Robin H-W Wang, Peter A Norreys

摘要:

本文从量子电动力学的角度对激光强度下的非有质动力吸收进行了理论和数值研究。据预测,有一个政权的变化,在入射激光能量的依赖性的快电子能量,符合通过Breit-Wheeler过程的对生产的发病。这一预测是通过一个广泛的运动QED包容粒子在细胞模拟数值验证。幂律转变的戏剧性性质导致的结论是,这个过程是一个明确的签名,未来的实验上的多拍瓦激光设施已经真正进入QED制度的候选人。

英文摘要:

A theoretical and numerical investigation of non-ponderomotive absorption at laser intensities relevant to quantum electrodynamics is presented. It is predicted that there is a regime change in the dependence of fast electron energy on incident laser energy that coincides with the onset of pair production via the Breit-Wheeler process. This prediction is numerically verified via an extensive campaign of QED-inclusive particle-in-cell simulations. The dramatic nature of the power law shift leads to the conclusion that this process is a candidate for an unambiguous signature that future experiments on multi-petawatt laser facilities have truly entered the QED regime.

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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