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首页> 外文期刊>Physics of plasmas >A one-dimensional model illustrating virtual-cathode formation in a novel coaxial virtual-cathode oscillator
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A one-dimensional model illustrating virtual-cathode formation in a novel coaxial virtual-cathode oscillator

机译：一维模型，说明新型同轴虚拟阴极振荡器中虚拟阴极的形成

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摘要

A one-dimensional electrostatic sheet model of a coaxial geometry Virtual Cathode Oscillator (VCO) is presented. The cathode is centrally located and connects to a peripherally located plate electrode to form a resonant cavity, and is thus considered to be a novel design. Charge is modelled as concentric sheets about the cathode whose absolute position and velocity are determined as a function of time by solving the relativistic equations of motion. The model predicts the formation of a virtual cathode between the grid and plate electrodes for the case of a space-charge limited current. Setting the electron reflexing frequency (as a function of the grid potential) comparable with the cavity resonant frequency is predicted to improve the efficiency of microwave emission. (C) 2014 AIP Publishing LLC.
机译：提出了同轴几何虚拟阴极振荡器（VCO）的一维静电薄片模型。阴极位于中心并且连接到位于外围的板电极以形成谐振腔，因此被认为是新颖的设计。通过求解相对论运动方程，将电荷建模为围绕阴极的同心圆片，其绝对位置和速度是时间的函数。该模型预测在空间电荷受限电流的情况下，在栅极和平板电极之间将形成虚拟阴极。预计设置与腔谐振频率相当的电子反射频率（作为栅极电势的函数）可提高微波发射效率。 （C）2014 AIP Publishing LLC。

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