The strong flows of relativistic electrons, encountered in high power short pulse laser plasma interaction, have the potential to drive Weibel instability producing short wavelength magnetic fields. The presence of a Langmuir wave couples the Weibel instability to two electrostatic wave sidebands. The density perturbations due to the sidebands couple with the oscillatory electron velocity due to the pump to produce a current that enhances the growth rate of Weibel instability. The thermal spread of the energetic (drifting) electrons, however, reduces the growth rate.
高功率短脉冲激光等离子体相互作用中遇到的相对论性电子强流,有可能驱动韦伯不稳定性,从而产生短波长磁场。朗缪尔波的存在将韦伯不稳定性与两个静电波边带耦合起来。由边带引起的密度扰动与由泵浦波引起的电子振荡速度相耦合,产生电流,从而增强韦伯不稳定性的增长率。然而,高能(漂移)电子的热扩展会降低该增长率。