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本文讨论了变参数自由电子激光器中电子的运动,指出部分电子的轨道是非周期性,随机型的。随着参数变化率增大,随机轨道电子所占比例愈大。文中还提出了当随机运动较强时统计描述的方法,以及随机运动对效率的影响。In this article, the motion of electrons in free electron lasers with variable parameter wigglers is discussed. It is pointed out that, the more quickly the parameter varies, the more trapped electrons move stochastically. The influences of such stochastic motion on laser efficiency have been analyzed numerically. A statistical method to describe the beam behavior in strong stochastic limit has also been developed.
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