采用电荷中和及磁中和模型，求解了束-等离子体系统的初值问题，得到了等离子体的响应函数。
The electrostatic and magnetic neutralization model has been adopted in solving the initial value problem of the beam-plasma system to obtain the plasma response functions.
结果表明，在离子束-等离子体系统中可以激发维泊耳型电磁不稳定性，离子和电子之间的碰撞将使这类不稳定性的增长率增加。
The results show that electromagnetic instability can be excited in an ion-beam-plasma system. Ion-electron collisions increase the growth rate of the instability.
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