强激光在磁化多组分等离子体中的色散关系

Dispersion Relation of High Power Laser in Magnetized Multicomponent Plasma

色散关系是研究激光与等离子体相互作用的基础。本文利用麦克斯韦方程组,结合磁流体力学中的相对论性动量方程,推导出圆偏振强激光在磁化的电子-正电子对等离子体、电子-正电子-离子等离子体中平行于磁场方向传播时的色散关系、折射率以及截止频率,并重点讨论正电子组分、磁场、激光的偏振性对它们的影响。

Dispersion relation is the basis of studying the interaction between laser and plasma.In this paper,the dispersion relation,refractive index and cut-off frequency of circularly polarized intense laser propagating parallel to the magnetic field direction in magnetized electron,positron to plasma,electron,positron and ion plasma are derived by using maxwell equations and the relativistic momentum equation in magnetohydrodynamics.The influence of positron component,magnetic field and laser polarization on them is emphatically discussed.