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arXiv 1807.06968physics.plasm-ph
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高密度粒子束碰撞中的亮$γ$射线源和丰富的非线性Breit-Wheeler对

Bright $γ$ rays source and copious nonlinear Breit-Wheeler pairs in the collision of high density particle beams

F. Del Gaudio, T. Grismayer, R. A. Fonseca, W. B. Mori, L. O. Silva

摘要:

在FACET II和激光尾流场加速器实验中,10秒GeV的超短高密度$e^-$或$e^-$和$e^+$光束的碰撞可以产生高度准直的$γ$射线(几个GeV),峰值亮度为$10^{27}~\mathrm{ph/s~mm^2 mrad^2 0.1\% BW}$,最高可达$10^5$非线性Breit-Wheeler对。我们提供了分析估计的光子源的属性和次级对的产量,发现与全尺寸的3D自洽粒子在细胞模拟,包括量子电动力学效应的协议。我们的研究结果表明,束-束碰撞可以利用作为二次源的$γ$射线,并提供了一种替代光束激光装置探测量子电动力学效应在Schwinger极限。

英文摘要:

The collision of ultrashort high-density $e^-$ or $e^-$ and $e^+$ beams at 10s of GeV, to be available at the FACET II and in laser wakefield accelerator experiments, can produce highly collimated $γ$ rays (few GeVs) with peak brilliance of $10^{27}~\mathrm{ph/s~mm^2 mrad^2 0.1\% BW}$ and up to $10^5$ nonlinear Breit-Wheeler pairs. We provide analytical estimates of the photon source properties and of the yield of secondary pairs, finding excellent agreement with full-scale 3D self-consistent particle-in-cell simulations that include quantum electrodynamics effects. Our results show that beam-beam collisions can be exploited as secondary sources of $γ$ rays and provide an alternative to beam-laser setups to probe quantum electrodynamics effects at the Schwinger limit.

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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