Abstract

Results of PIC simulation of the phase dynamics of counter-propagating overlimiting electron beams injected in opposite directions into various axially symmetric cavities are reviewed. Multiple examples of the complex dynamics of the beams are presented, in which virtual cathodes, phase-space holes, and squeezed state regions containing a dense charged electron plasma are formed. Space and time characteristics of the processes and the density, temperature, and lifetime of the electron plasma are estimated. Possible experiments and potential applications of counter-propagating overlimiting electron beams in various areas of science and technology are considered, including RF electronics, ultra-wideband electronics, particle accelerators, and electric discharges in gases.

中文翻译：

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反方向传播的超限电子束的复相动力学

摘要

回顾了以相反方向注入各种轴对称腔的反向传播超限电子束的相位动力学的 PIC 模拟结果。给出了光束复杂动力学的多个示例，其中形成了虚拟阴极、相空间空穴和包含密集带电电子等离子体的压缩态区域。估计过程的空间和时间特性以及电子等离子体的密度、温度和寿命。考虑了反向传播超限电子束在各个科学技术领域的可能实验和潜在应用，包括射频电子学、超宽带电子学、粒子加速器和气体放电。