Compton散射对等离子体MI基态增益谱的影响

Compton scattering′s influence on the MI fundamental gain spectrum of plasma

应用多光子非线性Compton散射模型和非线性薛定谔方程,研究了多光子非线性Compton散射对等离子体中调制不稳定性基态增益谱的影响,提出了将入射光和Compton散射光作为产生调制不稳定性的新机制,给出了微扰的功率增益表达式,并进行了数值模拟。结果表明,入射光和Compton散射光共同决定了调制不稳定性的基态增益,Compton散射使扰动信号的功率和频率增大,从而使增益谱对应的频率范围和增益峰值增大。

Using the model of the multi-photon nonlinear Compton scattering and nonlinear Schr dinger equations,the influence on the modulation instability of the fundamental gain spectra in plasma produced by multi-photon nonlinear Compton scattering is studied.A new mechanism of the modulation instability produced by incident light and Compton scattering has been pointed out,the equations of the perturbation power gain have been given out,and the gain equations are simulated.The results show that the fundamental gain of the modulation instability is induced by the incident light and Compton scatter,the counterpart frequency areas of the gain spectra and its extreme values are increased by Compton scattering.The power and frequency of the perturbation are also increased.