中国空间科学技术2017，Vol.37Issue(2)：1-10,10.DOI:10.16708/j.cnki.1000-758X.2017.0031
电子束撞击介质表面引发的带电现象分析
Surface charging analysis induced by electron beam impact dielectric
摘要
Abstract
For existing multipactor occurred in dielectric microwave components, more attention is paid to multipactor source and suppression from the aspect of resonance and emitted electron yield,while the study about influence of surface potential on multipactor is rarely reported. Secondary electron emission characteristics were analyzed. Final surface potential and electron impact energy were emphatically studied when electron beam with constant energy sostenuto impacted the dielectric surface with various initial surface potential.Surface potential and electron impact energy were calculated when the system became stable.Calculated data indicates that steady state of the system is remarkably influenced by primary energy and the second critical energy. The influence of surface potential on secondary electron emission was systematically studied when electrons with single and continuous energy impacted the dielectric surface.An—eΦ energy shifting of critical energy is revealed when surface potential is Φ. For electron beam with continuous incident energy,impact energy range is dramaticlly effected by surface potential of the dielectric,and the risk of multipactor is further influenced.关键词
航天器表面带电/二次电子发射/碰撞能量/表面电位/微放电Key words
spacecraft surface charging/secondary electron emission/impact energy/surface potential/multipactor分类
信息技术与安全科学引用本文复制引用
王丹,贺永宁,李韵..电子束撞击介质表面引发的带电现象分析[J].中国空间科学技术,2017,37(2):1-10,10.基金项目
国家自然科学基金(U1537211) （U1537211）
