Modulation of an intense beam by an external microwave source in the non-linear regime — theory and simulation

J. Krall, M. Friedman, V. Serlin, Y. Lau
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Abstract

A time dependent, fully electromagnetic particle code is used to simulate the current modulation in an intense relativistic electron beam (IREB) by an external rf source in the nonlinear regime. It is shown that non-linear effects, responsible for the high modulation levels seen in the experiments(1,2), may be explained via simple models and the non-linear propagation of fast and slow space charge waves. Qualitative and quantitative agreement between the theory and simulations is obtained.
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外部微波源在非线性状态下对强光束的调制——理论与仿真
采用时间相关的全电磁粒子码,模拟了强相对论电子束在非线性状态下由外部射频源调制的电流。结果表明,实验(1,2)中出现的高调制水平的非线性效应可以通过简单的模型和快慢空间电荷波的非线性传播来解释。理论和仿真结果在定性和定量上都是一致的。
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