Caustic structures in x-ray Compton scattering off electrons driven by a short intense laser pulse
Caustic structures in x-ray Compton scattering off electrons driven by a short intense laser pulse
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由短强激光脉冲驱动的 X 射线康普顿散射电子的苛性结构
DOI：
10.1088/1367-2630/18/2/023044
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发表时间：
2015
影响因子：
3.3
通讯作者：
B. Kämpfer
中科院分区：
文献类型：
--
作者：
D. Seipt;A. Surzhykov;S. Fritzsche;B. Kämpfer;B. Kämpfer
本文研究了在相对论强激光短脉冲驱动下，X射线与电子的康普顿散射。激光辅助的康普顿辐射的频谱显示了一个广泛的平台附近的激光自由康普顿线由于x射线和激光光子之间的非线性混合。特别强调的是如何短的辅助激光脉冲的形状影响的散射X射线的光谱。特别是，我们观察到尖锐的峰值结构的平台区域，其数量和位置是高度敏感的激光脉冲的形状。这些结构被解释为光谱焦散通过使用半经典分析的激光辅助QED矩阵元素，相关的焦散峰位置的激光驱动的电子运动。
We study the Compton scattering of x-rays off electrons that are driven by a relativistically intense short optical laser pulse. The frequency spectrum of the laser-assisted Compton radiation shows a broad plateau in the vicinity of the laser-free Compton line due to a nonlinear mixing between x-ray and laser photons. Special emphasis is placed on how the shape of the short assisting laser pulse affects the spectrum of the scattered x-rays. In particular, we observe sharp peak structures in the plateau region, whose number and locations are highly sensitive to the laser pulse shape. These structures are interpreted as spectral caustics by using a semiclassical analysis of the laser-assisted QED matrix element, relating the caustic peak locations to the laser-driven electron motion.
影响因子：
64.8
作者：
Wernet, Ph.;Kunnus, K.;Foehlisch, A.
通讯作者：
Foehlisch, A.
影响因子：
19.6
作者：
Wittmann, T.;Horvath, B.;Kienberger, R.
通讯作者：
Kienberger, R.
影响因子：
64.8
作者：
Schwoerer, H;Pfotenhauer, S;Esirkepov, T
通讯作者：
Esirkepov, T