光学技术, 2016, 42 (1): 70, 网络出版: 2016-03-22
Compton散射下横等离激元与对等离子体作用特性
Charcters of the nonlinear interaction between transverse plasmons and paired plasma with Compton scattering
等离子体 超强激光 横等离激元 对离子等离子体 多光子非线性Compton散射 plasma extra-intense laser transverse plasmons pair plasma multi-photon nonlinear Compton scattering
摘要
应用多光子非线性Compton散射模型、横等离激元色散方程和Karpman方法,研究了Compton散射对横等离激元与对等离子体作用特性的影响,提出了将入射超强激光和Compton散射作为横等离激元与对离子等离子体非线性作用新机制,给出了横等离激元非线性控制方程、等离激元数和能量公式。结果表明:与散射前相比,Compton散射使等离子体密度发生剧烈扰动,高频横等离激元与低密度扰动耦合非线性增强,导致横等离激元落入低密度区的几率增大。等离子体非线性频移和高密度区能量增加,低密度区能量减小,导致横等离激元电场包络迅速坍塌,等离激元数增加,场强度更强。
Abstract
By using the model of multi-photon nonlinear Compton scattering,the dispersion equation of transverse plasmons and Karpman methods,the influences of Compton scattering on the characters of interaction between the transverse plasmons and plasma are studied. A new mechanism on the nonlinear effect of the transverse plasmons and plasma formed by the incident extra-intense laser and Compton scattering light is proposed. The nonlinear control equation of the transverse plasmons,the plasmons number and energy formula are derived. The results show that the plasma density is acutely disturbed by Compton scattering than that before the scattering,the coupling nonlinearity of high frequency transverse plasmons and low density disturbance is increased,and the probability that the transverse plasmons is come into the low density area is increased. The nonlinear frequency shift and the energy in the high density area are increased,the energy of the low density area is decreased,and the wave front of the electric field of the transverse plasmons is quickly collapsed,the plasmons numbers are increased,and the even strong field intensity becomes larger.
程传喜, 郝东山. Compton散射下横等离激元与对等离子体作用特性[J]. 光学技术, 2016, 42(1): 70. CHENG Chuanxi, HAO Dongshan. Charcters of the nonlinear interaction between transverse plasmons and paired plasma with Compton scattering[J]. Optical Technique, 2016, 42(1): 70.