The nonlinear effect in relativistic Compton scattering for an intense circularly polarized laser
The nonlinear effect in relativistic Compton scattering for an intense circularly polarized laser
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DOI：
10.1088/0031-8949/89/7/075208
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发表时间：
2014-05
期刊：
影响因子：
2.9
通讯作者：
W. Luo;H. Zhuo;Y. Ma;Z. Zhu;G. Fan;W. Xu;Y. M. Song
中科院分区：
文献类型：
--
作者：
W. Luo;H. Zhuo;Y. Ma;Z. Zhu;G. Fan;W. Xu;Y. M. Song
强激光脉冲和相对论电子束之间的康普顿散射为高能、高亮度的x射线和伽马射线源提供了一条有前途的发展道路。增加激光峰值功率以获得强烈的x射线和伽马射线，导致非线性康普顿散射发生。为了预测高次谐波辐射特性，我们对蒙特卡罗激光-康普顿散射模拟程序（MCLCSS）进行了升级，考虑了相对论性康普顿散射过程的非线性效应。利用强圆偏振激光的非线性康普顿散射，研究了散射光子的能谱、角强度和谐波强度分布。发现激光参数a 0≡⃥e ame c−2 ？>在高次谐波辐射的产生中起着重要作用。我们的研究还表明，二次谐波和更高次谐波的高能尾部将偏离后向散射区域。
Compton scattering between an intense laser pulse and a relativistic electron beam offers a promising development path toward high-energy, high-brightness x- and gamma-ray sources. Increasing laser peak power to obtain intense x- and gamma rays causes nonlinear Compton scattering to occur. To predict high-order harmonic radiation properties, we upgrade a Monte Carlo laser-Compton scattering simulation code (MCLCSS) by taking into account the nonlinear effect for the relativistic Compton scattering process. The energy spectra and angular and harmonic intensity distributions of the scattered photons are investigated using nonlinear Compton scattering of an intense circularly polarized laser. It is found that the laser parameter a 0 ≡⃥ e A m e c − 2 ?> plays an important role in the generation of high-order harmonic radiation. Our study also suggests that the high-energy tails of the second and higher harmonics will stray from the backscattering region.