Electrostatic cylinder lenses II: Three element einzel lenses
Electrostatic cylinder lenses II: Three element einzel lenses
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DOI：
10.1088/0022-3735/5/2/019
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发表时间：
1972-02
期刊：
影响因子：
--
通讯作者：
A. Adams;F. H. Read
中科院分区：
文献类型：
--
作者：
A. Adams;F. H. Read
（见同上，1971年第4,625卷）用三柱埃泽尔透镜的焦距、中焦距和球差系数计算了三个等径同轴圆柱内的电势分布。所考虑的透镜的中间圆柱体的长度等于其直径或其直径的一半。在较大的电压比范围内，这种透镜的中间柱面具有比外柱面更高或更低的电位。
For Pt. I see ibid., vol. 4, 625 of 1971 The potential distribution inside three equidiameter coaxial cylinders separated by finite distances has been used to calculate the focal lengths, mid focal lengths and spherical aberration coefficients of some triple cylinder einzel lenses. The lenses considered have the length of the middle cylinder equal to its diameter or to half its diameter. Data are presented for such lenses with the middle cylinder at either a higher or lower potential than the outer cylinders over a large range of voltage ratios.