Are we ready to transfer optical light to gamma-rays?
Are we ready to transfer optical light to gamma-rays?
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DOI：
10.1063/1.5090992
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发表时间：
2019-02
影响因子：
2.2
通讯作者：
M. Vranic;T. Grismayer;S. Meuren;Ricardo Fonseca;Luis O. Silva
中科院分区：
文献类型：
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作者：
M. Vranic;T. Grismayer;S. Meuren;Ricardo Fonseca;Luis O. Silva
用光学激光散射相对论电子可能会导致光子的频率显著上移，从而潜在地产生伽马射线。这就是线性康普顿散射教会我们的。超强激光提供了一种新的范式，多光子吸收效应在其中发挥作用。这些效应可以导致更高的谐波、更高的产额以及电子-正电子对。本文旨在区分过去几年中提出的不同激光情景，并给出未来实验的定标规律。对于众所周知的反向传播电子束-激光相互作用和由各种激光触发的量子电动力学级联，讨论了激光或粒子到高频光子的能量转换。在受控条件下建造明亮、高能的伽马射线源近在咫尺。
Scattering relativistic electrons with optical lasers can result in a significant frequency upshift for the photons, potentially producing $\gamma$-rays. This is what linear Compton scattering taught us. Ultra-intense lasers offer nowadays a new paradigm where multi-photon absorption effects come into play. These effects can result in higher harmonics, higher yields and also electron-positron pairs. This article intends to discriminate the different laser scenarios that have been proposed over the past years as well as to give scaling laws for future experiments. The energy conversion from laser or particles to high-frequency photons is addressed for both the well-known counter propagating electron beam-laser interaction and for Quantum-electrodynamics cascades triggered by various lasers. Constructing bright and energetic gamma-ray sources in controlled conditions is within an ace of seeing the light of day.