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	Analysis and calculation of third- and fifth-order aberrations in combined bell-shaped electromagnetic lens - a new theoretical model in electron optics
	Ximen, Jiye ; Liu, Zhixiong
刊名	optik jena
	2000
英文摘要	The author has developed canonical aberration theory, and has performed a generalized integration transformation on eikonals. Electron optical aberrations have first been derived for up to the ninth-order approximation in rotationally symmetric magnetic and electrostatic lenses. In the present paper, based on above-mentioned theoretical results, analytical formulas for Gaussian trajectory, third- and fifth-order geometric aberration coefficients have first been derived in a so-called combined bell-shaped electromagnetic lens - a new theoretical model first proposed in electron optics. We have shown that the fifth-order spherical aberration coefficient changes its sign in a range of the lens-strength parameter for a combined bell-shaped electromagnetic lens. It is to be expected that this theoretical research may be useful for estimating variations and effects of higher-order aberrations in rotationally symmetric combined electromagnetic lenses.; EI; 0; 2; 75-84; 111
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/409626]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Ximen, Jiye,Liu, Zhixiong. Analysis and calculation of third- and fifth-order aberrations in combined bell-shaped electromagnetic lens - a new theoretical model in electron optics[J]. optik jena,2000.
APA	Ximen, Jiye,&Liu, Zhixiong.(2000).Analysis and calculation of third- and fifth-order aberrations in combined bell-shaped electromagnetic lens - a new theoretical model in electron optics.optik jena.
MLA	Ximen, Jiye,et al."Analysis and calculation of third- and fifth-order aberrations in combined bell-shaped electromagnetic lens - a new theoretical model in electron optics".optik jena (2000).

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