CAJ | 학술논문

应用多光子非线性Compton 散射模型、电磁波非线性色散方程和 Karpman方法，研究了Compton散射对线偏光在相对论等离子体中调制不稳定性的影响，给出了等离子体的非线性色散、控制和调制不稳定性增长率的修正方程，并进行了数值模拟。结果表明：与散射前相比，随无量纲化频率值减小，即趋于等离子体临界面处，散射使相同扰动波数引起的调制不稳定性增长率更大，使等离子体临界面处的调制不稳定性增长率较其余位置尤为显著。这是由于散射光使等离子体非线性增强，形成了激光场自聚焦和自成丝的缘故。
응용다광자비선성Compton 산사모형、전자파비선성색산방정화 Karpman방법，연구료Compton산사대선편광재상대론등리자체중조제불은정성적영향，급출료등리자체적비선성색산、공제화조제불은정성증장솔적수정방정，병진행료수치모의。결과표명：여산사전상비，수무량강화빈솔치감소，즉추우등리자체림계면처，산사사상동우동파수인기적조제불은정성증장솔경대，사등리자체림계면처적조제불은정성증장솔교기여위치우위현저。저시유우산사광사등리자체비선성증강，형성료격광장자취초화자성사적연고。
By using the model of multi-photon nonlinear Compton scattering, the nonlinear dispersion relation and Karpman’s model, the influences of the modulation instability on Compton scattering to the linear polarized light in relativistic plasma were studied, the revised equations on the nonlinear dispersion, the control and the growth rate of the modulation instability were given out, and these equations are simulated. The results show that under the same perturbation wave numbers, the even big rate of the modulation instability near the plasma surface are taken place by Compton scattering along with the decreasing of the numbers of the no gauge frequency than before Compton scattering, and the even marked growth rate of the modulation instability near the plasma surface are taken place near the plasma surface than other places. Because the plasma nonlinear is increased by the scattering, the self-focusing and self-turned fine silk are formed.