光子学报
光子學報
광자학보
ACTA PHOTONICA SINICA
2009年
7期
1626-1631
,共6页
变像管%交叉枪%准层流枪%调制型
變像管%交扠鎗%準層流鎗%調製型
변상관%교차창%준층류창%조제형
Image-converter tube%Cross-over electron gun%Quasi-laminar flow electron gun%Modulation type
基于变像管工作原理并从其整体性能优化的角度出发,得出在其中采用准层流电子束的必要性;通过分析已有电子光学聚焦系统所存在的结构和性能上的缺陷,确立了优化电子透镜系统的基本模型.在分析各参量相对变化对其渐进聚焦调制特性影响的基础上,阐明了通过膜孔透镜的引入而形成对电子束横向尺寸具有渐进压缩特性的准层流电子枪的可能性.
基于變像管工作原理併從其整體性能優化的角度齣髮,得齣在其中採用準層流電子束的必要性;通過分析已有電子光學聚焦繫統所存在的結構和性能上的缺陷,確立瞭優化電子透鏡繫統的基本模型.在分析各參量相對變化對其漸進聚焦調製特性影響的基礎上,闡明瞭通過膜孔透鏡的引入而形成對電子束橫嚮呎吋具有漸進壓縮特性的準層流電子鎗的可能性.
기우변상관공작원리병종기정체성능우화적각도출발,득출재기중채용준층류전자속적필요성;통과분석이유전자광학취초계통소존재적결구화성능상적결함,학립료우화전자투경계통적기본모형.재분석각삼량상대변화대기점진취초조제특성영향적기출상,천명료통과막공투경적인입이형성대전자속횡향척촌구유점진압축특성적준층류전자창적가능성.
Based on the operating principle of image converter tubes,an analysis of the disadvantageous effect of the existing electron beam cross-over section on its overall performance was made.The emphasized consideration of performance optimization means that it is necessary to adopt the quasi-laminar flow electron gun.A basic analytical model of optimized system of focusing electron lens is well established through the comparative analysis on the deficiency of focusing performance of the commonly used electrostatic electron lens and magnetic one.Furthermore,by getting an insight into the dependence of focusing properties on the relative geometrical parameters and potential ones of the referred electrostatic lens system,the realizability of the novel quasi-laminar flow electron gun with excellent incrementally compressive modulation property was illustrated in terms of applicability,correctness and practicality.