强激光驱动高能极化正负电子束与偏振伽马射线的研究进展  

Review on laser-driven high-energy polarized electron and positron beams and γ-rays

作　　者：孙婷 王宇[1] 郭任彤 卢知为 栗建兴 Sun Ting;Wang Yu;Guo Ren-Tong;Lu Zhi-Wei;Li Jian-Xing(MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter,School of Science,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]西安交通大学物理学院,教育部物质非平衡合成与调控重点实验室,西安710049

出　　处：《物理学报》2021年第8期374-385,共12页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:12022506,11874295)资助的课题。

摘　　要：高能自旋极化正负电子束与偏振伽马射线在高能物理、实验室天体物理与核物理等领域有十分重要的应用.近年来随着超短超强激光脉冲技术的快速发展,利用强激光与物质相互作用的非线性康普顿散射和多光子Breit-Wheeler过程为制备高极化度、高束流密度的高能极化粒子束提供了新的可能.本文对基于强激光产生高能极化正负电子束与偏振伽马射线的研究成果进行简要回顾,并介绍了这些方法的基本物理原理和主要结果.High-energy spin-polarized electron and positron beams and γ-rays have plenty of significant applications in high-energy, laboratory astro-and nuclear physics, and the efficient generation of such polarized beams attracts a broad research interest. Recently, with the rapid development of ultrashort ultraintense laser pulse technology, the modern laser pulses can achieve a peak intensity in a range of 1022- 1023 duration of tens of femtoseconds. The interaction mechanisms between such a laser pulse and matter have been spanned from linear regime to nonlinear regime due to multiphoton absorbtion, such as nonlinear Compton scattering and Breit-Wheeler pair production. Employing spin-dependent nonlinear Compton scattering and multiphoton Breit-Wheeler scattering in laser-matter interaction paves a new way for generating the highpolarized high-density high-energy electron and positron beams and γ-rays with tens of femtoseconds in pulse duration. This article briefly reviews the research progress of polarized electron and positron beams and γ-rays generated by laser-matter interaction, and also introduces the principles and main conclusions.

关 键 词：量子电动力学 相对论激光脉冲 极化正负电子束 偏振伽马射线 

分 类 号：TN249[电子电信—物理电子学]