基于激光唤醒场加速器的27纳米自由电子激光
Wentao Wang1, Ke Feng2, Lintong Ke2,3
1State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), Shanghai, People's Republic of China. wwt1980@siom.ac.cn.
Nature
|July 22, 2021
概括
研究人员使用激光唤醒场加速器展示了紧的X射线自由电子激光 (XFEL) 技术. 这一突破为科学研究提供了更强大,更小,更便宜的X射线源.
科学领域:
- 物理
- 加速器科学
- 光子科学
背景情况:
- 射线自由电子激光器 (XFEL) 为结构生物学和化学提供强烈,连贯的辐射.
- 目前的XFEL设施依赖于大型,昂贵的射频加速器.
- 紧和经济的加速器选项非常受欢迎.
研究的目的:
- 为XFEL应用展示使用激光唤醒场加速器 (LWA) 的可行性.
- 为了克服来自激光的低质量电子束的挑战.
- 使用LWA驱动的电子束来实现波浪器辐射的指数增长.
主要方法:
- 使用三个波浪器的实验设置.
- 通过激光唤醒场加速生成电子束.
- 放大波浪器辐射特征的测量.
主要成果:
- 在指数增益模式下成功证明波浪器辐射放大.
- 在27nm时达到约150纳诺的峰值辐射能量.
- 观察到第三个波浪器的功率增加100倍, 证实了激光.
结论:
- 使用激光唤醒场加速器进行自由电子激光的原理证明.
- 为开发紧且经济的XFEL铺平了道路.
- 通过小型化扩大XFEL技术的潜在应用.
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