Experimental Investigation of Nonlinear Electron-RF Field Interaction

非线性电子-射频场相互作用的实验研究

• 批准号: 8719002
• 负责人: Chung Chan
• 金额: --
• 依托单位: Northeastern University
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-08-15 至 1992-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8719002&HistoricalAwards=false
• 关键词: Experimental; Investigation; Nonlinear; Electron; RF

Vacuum electron devices, instead of solid-state devices, provide potentially the best engineering solutions for many microwave system functions involving high power, high efficiency and certain kinds of harsh environments. The current effort to expand the state-of-art of high power microwave electron devices has intensified the need to understanding the highly nonlinear and dispersive nature of the interaction between electrons and rf fields. The current research will investigate the situation where the self-contraction of a slow- circuit-wave in an electron cloud results in the formation of electric field solitons and convective electron vortices in the electron-rf interaction space of a microwave crossed-field amplifier (CFA). The experiments include (1) simulation of a simple CFA device using a pure electron plasma and standard plasma diagnostics; and (2) development of advanced diagnostic techniques to search for the existence of solitons in a commercial 425 MHz CFA. The proposed work can establish the much needed physical basis for the application of a soliton based theory to understand highly nonlinear effects in high power microwave devices. The proposed work is also very fundamental in nature and may foster the transfer of several well-established plasma concepts to the study of microwave electron devices.

真空电子器件代替固态器件，为涉及高功率、高效率和某些恶劣环境的许多微波系统功能提供了潜在的最佳工程解决方案。 当前为扩展高功率微波电子器件的先进性所做的努力，更加需要了解电子与射频场之间相互作用的高度非线性和色散性质。 目前的研究将研究电子云中慢电路波的自收缩导致微波交叉场放大器（CFA）电子-射频相互作用空间中电场孤子和对流电子涡流形成的情况。 实验包括 (1) 使用纯电子等离子体和标准等离子体诊断模拟简单的 CFA 设备； (2) 开发先进的诊断技术来寻找商用 425 MHz CFA 中孤子的存在。 所提出的工作可以为应用基于孤子的理论来理解高功率微波器件中的高度非线性效应奠定急需的物理基础。 所提出的工作本质上也是非常基础的，并且可能促进将几个成熟的等离子体概念转移到微波电子器件的研究中。