摘要
研究了逆流相对论电子与激光脉冲相互作用获得激光同步辐射的频率上移、微分散射截面等特性。发现逆流相对论电子与短脉冲激光相互作用,可以获得阿秒X射线辐射脉冲。短脉冲激光条件下得到的后向散射光的频率上移与长脉冲激光条件下得到的后向散射光的频率上移是完全一致的,同时发现随着入射电子初始能量的增加,散射光的准直性越来越好,后向散射光脉冲的脉宽越来越短。
The frequency upshifting and differential cross section of the laser synchrotron source (LSS) are studied based on the Thomson backscattering of intense laser radiation from a counterstreaming relativistic electron. A counterstreaming relativistic electron interacting with an incident short pulse laser emits attosecond X-ray pulse, the frequency upshifting of the backward scattered radiation under the short pulse laser is identical with that under the long pulse laser. The pulse width of the backward scattered radiation decreases with the increase of the electron's initial energy, and the collimation of the scattered radiation becomes better.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2005年第11期1630-1634,共5页
High Power Laser and Particle Beams
基金
国家自然科学基金资助课题(10375083)
国家重点基础研究专项基金资助课题(TG1999075206-2)
关键词
阿秒脉冲
X射线
激光同步辐射
频率上移
后向散射
Attosecond pulse
X-ray
Laser synchrotron radiation
Frequency upshifting
Backscattering