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快速电子脉冲在相对论激光-油脂相互作用中的五秒动力学

Guoqian Liao^1,2,3, Fangzheng Sun^1,2, Hongyi Lei^1,2

¹Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.

Physical review letters

|April 29, 2024

概括

科学家们使用太赫兹辐射追踪了激光相互作用期间的相对论电子脉冲. 结果显示,电子脉冲与激光持续时间相匹配,并表现出再循环动态,这对于理解激光驱动粒子源至关重要.

科学领域:

等离子体物理学的物理学
超快激光科学超快激光科学
粒子加速粒子加速

背景情况:

了解激光物质相互作用中产生的相对论电子脉冲的动态对于开发先进的粒子和辐射源至关重要.
描述这些电子脉冲的时间性质,特别是它们的持续时间和循环,是一个重大的实验挑战.

研究的目的:

为了研究超强激光薄膜相互作用中的相对论电子脉冲的 femtosecond 时间解析动态.
开发和演示一个现场,实时测量方案,用于表征电子爆发.
为了探索产生的静电电位内的电子再循环动态.

主要方法:

关于相对论电子脉冲的5秒时间分辨率测量.
使用一次性超宽带干涉测量的太赫兹自我辐射的表征.
理论建模以补充实验观察.

主要成果:

实验测量和理论建模证实,电子脉冲继承驱动激光脉冲的持续时间.
电子再循环动态的可视化,电子被困在自生成的静电潜力井内振荡数百个femtoseconds.
在现场展示了一种新的实时计量系统,用于电子爆发.

结论:

这项研究提供了关于超强激光与薄薄膜相互作用而产生的相对论电子脉冲的时间行为的关键见解.
观察到的电子再循环动态对于控制和优化激光驱动的粒子和辐射源具有重大意义.
开发的计量学方案为超快电子动态的实时表征提供了一个强大的工具.

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