高功率微波孔缝击穿特性

Preliminary analysis on high power microwave breakdown characteristics in slots

摘要:

针对微波通过封装腔体狭缝出现的共振增强效应和击穿特性开展研究，重点研究影响高功率微波辐射传输通道上的防护因素—微波击穿时间、传输能量等。研究结果表明：在微波击穿防护过程中，如果在腔体强电场区域存在自由电子，使得不存在较长的击穿时间延迟条件下，那么微波击穿将会是限制高功率微波通过狭缝进行能量传输的有效方法。

Abstract:

The properties of microwave-induced breakdown of air in narrow metallic slots are investigated，with emphasis on factors important for protection against transmission of incident High-Power Microwave(HPM) radiation. The key factors investigated are breakdown time，peak-leakage power, as functions of incident pulse and power density. The investigation demonstrates that self-induced microwave breakdown will be an efficient mechanism for limiting high-power microwave transmission through slots，if seed electrons must always be available in the slot volume in order to start the breakdown process without delay in the microwave breakdown protection process.