Potential to measure quantum effects in recent all-optical radiation reaction experiments
Potential to measure quantum effects in recent all-optical radiation reaction experiments
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DOI：
10.1117/12.2520591
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发表时间：
2019-04
期刊：
影响因子：
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通讯作者：
Christopher Arran;J. M. Cole;E. Gerstmayr;T. Blackburn;S. Mangles;C. Ridgers
中科院分区：
文献类型：
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作者：
Christopher Arran;J. M. Cole;E. Gerstmayr;T. Blackburn;S. Mangles;C. Ridgers
10 PW级激光设备的建设具有前所未有的强度，强调了对辐射反应过程的透彻理解的必要性。我们描述了最近的一个全光碰撞脉冲实验的模拟，在该实验中，激光尾流场加速器产生的GeV级电子束与反向传播的激光脉冲相互作用。在电子束的剩余框架中，激光脉冲的电场增加了几个数量级，接近施温格场，导致与经典朗道-利夫希茨模型的实质性变化。我们的模拟显示了最终的电子和光子光谱如何使我们能够区分随机和半经典的辐射反应模型，即使在实验参数中有显著的射击到射击的变化。特别是，如果要有信心地证明随机模型，则对允许的最大能量扩散和弹间变化进行了约束。
The construction of 10 PW class laser facilities with unprecedented intensities has emphasized the need for a thorough understanding of the radiation reaction process. We describe simulations for a recent all-optical colliding pulse experiment, where a GeV scale electron bunch produced by a laser wakefield accelerator interacted with a counter-propagating laser pulse. In the rest frame of the electron bunch, the electric field of the laser pulse is increased by several orders of magnitude, approaching the Schwinger field and leading to substantial variation from the classical Landau-Lifshitz model. Our simulations show how the final electron and photon spectra may allow us to differentiate between stochastic and semi-classical models of radiation reaction, even when there is significant shot-to-shot variation in the experimental parameters. In particular, constraints are placed on the maximum energy spread and shot-to-shot variation permissible if a stochastic model is to be proven with confidence.