自调制等离子体镜的异常相对论辐射
M Lamač1,2, K Mima3, J Nejdl1,4
1ELI Beamlines Facility, The Extreme Light Infrastructure ERIC, Za Radnicí 835, Dolní Břežany 25241, Czechia.
Physical review letters
|December 1, 2023
概括
高强度激光与等离子镜的相互作用意外地产生了连贯的极紫外线 (XUV) 辐射. 这种异常的XUV辐射由于电子纳米团振荡而与镜面平行传播.
科学领域:
- 等离子体物理学的物理学
- 激光-物质相互作用 激光-物质相互作用
- 在一秒钟的科学.
背景情况:
- 强烈的激光脉冲与等离子镜相互作用,产生高阶波,产生极端紫外线 (XUV) 辐射和亚秒脉冲.
- 在反射波中,时空连贯性损失以前被认为是局限性.
研究的目的:
- 为了研究从等离子镜中产生高波的意外转变.
- 为了探索方向异常连贯XUV辐射的现象.
主要方法:
- 进行分析计算.
- 数字粒子在细胞 (PIC) 模拟. 数字粒子在细胞 (PIC) 模拟.
- 对相对论电子纳米团的激光驱动振荡的分析.
主要成果:
- 时空连贯性的丧失可以导致一个新的,高效的连贯XUV生成系统.
- 观察到XUV辐射的异常定向传播,与等离子体镜面平行.
- 确定了来自等离子体表面不稳定的相对论电子纳米团的激光驱动振荡作为发射机制.
结论:
- 意想不到的是,连贯性损失可以提高高效连贯的XUV生成.
- 异常XUV传播的发现为attosecond科学和连贯辐射源开辟了新的途径.
- 等离子体表面的不稳定性在产生新的连贯辐射特性方面发挥着至关重要的作用.
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