磁绝缘传输线振荡器中的次级电子倍增现象  

Moltipactor discharge in a magnetically insulated transmission line oscillator

作　　者：郝建红[1] 丁武[2] 董志伟[2] 

机构地区：[1]华北电力大学信息工程系,北京100201 [2]北京应用物理与计算数学研究所,北京100088

出　　处：《物理学报》2006年第9期4789-4794,共6页Acta Physica Sinica

基　　金：国家863计划强辐射重点实验室基金(批准号:20050601)资助的课题.~~

摘　　要：根据磁绝缘传输线振荡器(MILO)的结构特点,建立了一个单边次级电子倍增(multipactor)模型,通过对敏感曲线、相位聚焦的计算,分析了MILO中发生multipactor的物理图象.结果表明从聚焦区域大小看,单边发生multipactor比双边要严重.在MILO中发生的multipactor都属于单边模式,并且有出现电子掠入射金属表面的大量机会,因此它发生multipactor比O型器件严重.According to the structure characteristic of the magnetically insulated transmission line oscillator （ MILO）, a one-sided mul- tipactor discharge model is present. Through the calculations of the susceptibility curves and phase focusing effect, the physical conditions of the muhipactor discharge occurring in the MILO are analyzed. The results show that one-sided muhipactor modes have a wider phase focusing range than two-sided modes, and there is many chances for electronic grazing incidence on the metal surface for MILO. So the muhipactor discharge is more serious for MILO than O-type devices.

关 键 词：磁绝缘传输线振荡器 次级电子倍增效应 脉冲缩短 

分 类 号：TN752[电子电信—电路与系统]