Creation of Electron-Positron Pairs in Photon-Photon Collisions Driven by 10-PW Laser Pulses
Creation of Electron-Positron Pairs in Photon-Photon Collisions Driven by 10-PW Laser Pulses
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10-PW 激光脉冲驱动的光子-光子碰撞中产生电子-正电子对
DOI：
10.1103/physrevlett.122.014802
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发表时间：
2019
影响因子：
8.6
通讯作者：
Yan X. Q.
中科院分区：
文献类型：
--
作者：
Yu J. Q.;Lu H. Y.;Takahashi T.;Hu R. H.;Gong Z.;Ma W. J.;Huang Y. S.;Chen C. E.;Yan X. Q.
提出了一种利用10 pw激光驱动的准直宽带脉冲来证明双光子Breit-Wheeler过程的新方法。理论计算表明，每次发射可产生发散角为7°的电子-正电子对以上，信噪比高于。正电子信号大约是检测极限的100倍，可以用现有的光谱仪来测量。这种方法可以演示由两个光子形成对的过程，将为双光子物理学和其他基础物理理论提供重要的测试。
A novel approach is proposed to demonstrate the two-photon Breit-Wheeler process by using collimated and wide-bandwidth-ray pulses driven by 10-PW lasers. Theoretical calculations suggest that more thanelectron-positron pairs with a divergence angle of 7° can be created per shot, and the signal-to-noise ratio is higher than. The positron signal, which is roughly 100 times higher than the detection limit, can be measured by using the existing spectrometers. This approach, which could demonstrate thepair creation process from two photons, would provide important tests for two-photon physics and other fundamental physical theories.