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Dynamical stability of electron trajectories in a free-electron laser with planar wiggler

机译:具有平面摆动器的自由电子激光器中电子轨迹的动态稳定性

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摘要

The numerical computation of Kolmogorov entropy is used to study the dynamical stability of a free-electron laser with a planar wiggler. Axial magnetic field and ion-channel guiding are examined as two different types of focusing mechanism for confinement of the electron beam against its self-fields. It was found that the dynamical stability of electron trajectories decreases profoundly near the resonance region. Self-fields increase the dynamical stability in group I orbits and decrease it in group II orbits. These orbits are defined according to their axial magnetic field or ion-channel density.
机译:使用柯尔莫哥洛夫熵的数值计算来研究具有平面摆动器的自由电子激光器的动力学稳定性。轴向磁场和离子通道引导被视为两种不同类型的聚焦机制,用于将电子束限制在其自身场之外。发现在共振区域附近电子轨迹的动力学稳定性大大降低。自场增加了I组轨道的动力学稳定性,而降低了II组轨道的动力学稳定性。这些轨道是根据其轴向磁场或离子通道密度定义的。

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