摘要
本文采用新的时间像差定义,考察了“Tau变分法”研究电子光学成像系统的时间像差理论.本文表明,“Tau变分法”所给出的以微分方程形式表示的几何时间像差系数,亦可获得积分形式的表示式,证明了“直接积分法”与“Tau变分法”这两条途径殊途同归.
By the use of a novel definition of temporal aberrations, the temporal aberration theory of electron optical imaging system was again investigated by the ＂Tau-Variation Method＂. Results show that the expressions in integral form can also be obtained by the ＂Tau-Variation Method＂ which usually needs to solve the differential equations for the three of geometrical temporal aberration coefficients of second order. It also proves that the ＂Direct Integral Method＂ and ＂Tau-Variation Method＂ reach the same goal by different ways.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2006年第2期193-197,共5页
Acta Electronica Sinica
基金
国家自然科学基金(No.60471051)
国家自然科学基金国际合作项目(No.60310072)
