Vaughan模型二次电子能谱对空间微波部件微放电效应的影响分析  

The influence of the secondary electron spectrum of the vaughan model on the multipactor effect of space microwave components

作　　者：张娜[1] 崔万照[1] 王瑞[1] 白春江[1] ZHANG Na;CUI Wanzhao;WANG Rui;BAI Chunjiang(National Key Laboratory of Science and Technology on Space Microwave,China Academy of Space Technology(Xi'an),Xi'an 710000,China)

机构地区：[1]中国空间技术研究院西安分院,空间微波技术重点实验室,西安710000

出　　处：《空间电子技术》2021年第2期23-26,共4页Space Electronic Technology

基　　金：国家自然科学基金(编号:61901361,61971342)。

摘　　要：航天领域的微放电效应是严重影响星载微波部件性能和安全的瓶颈问题之一。以空间微波部件微放电阈值仿真中广泛使用的Vaughan模型为研究对象,以平行平板传输线和同轴传输线两种典型微波结构为例,研究了Vaughan模型的二次电子能量分布对微放电阈值的影响规律,在二次电子产额相同时,符合伽马概率密度分布的二次电子能谱参量T增大时,由于较高能量的二次电子比例增加,导致了微放电阈值的降低。The multipactor effect in the aerospace field is one of the bottlenecks that seriously affect the performance and safety of spaceborne microwave components.Because of thhe Vaughan model widely used in the simulation of multipactor threshold of space microwave components,the effect of the secondary electron spectrum of the Vaughan model on the multipactor threshold is studied,with the two typical microwave structures of parallel plate transmission line and coaxial transmission line as examples.When the secondary electron yield is the same,as the secondary electron energy spectrum parameter T corresponding to the gamma probability density distribution increases,the ratio of higher energy secondary electrons increasing,resulting in a decrease in the multipactor threshold.

关 键 词：微放电 Vaughan模型 二次电子能谱 伽马分布 

分 类 号：V443.4[航空宇航科学与技术—飞行器设计]