Higher-order aberration corrector for an image-forming system in a transmission electron microscope

被引:36
作者
Sawada, H. [1 ,2 ]
Sasaki, T. [1 ,2 ]
Hosokawa, F. [1 ]
Yuasa, S. [1 ]
Terao, M. [1 ]
Kawazoe, M. [1 ]
Nakamichi, T. [1 ]
Kaneyama, T. [1 ,2 ]
Kondo, Y. [2 ]
Kimoto, K. [2 ,3 ]
Suenaga, K. [2 ,4 ]
机构
[1] JEOL Ltd, Tokyo 1968558, Japan
[2] Japan Sci & Technol Agcy, CREST, Chiyoda Ku, Tokyo 1020075, Japan
[3] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, Japan
[4] Natl Inst Adv Ind Sci & Technol, Res Ctr Adv Carbon Mat, Tsukuba, Ibaraki 3058565, Japan
基金
日本科学技术振兴机构;
关键词
Six-fold astigmatism; Diffractogram tableau; Aberration correction;
D O I
10.1016/j.ultramic.2010.01.010
中图分类号
TH742 [显微镜];
学科分类号
摘要
We developed a new electron optical system with three dodecapoles to compensate for spherical aberration and six-fold astigmatism, which generally remains in a two-hexapole type corrector. In this study, we applied the corrector for image-forming system in transmission electron microscope. Compensation for higher-order aberration was demonstrated through a diffractogram tableau using a triple three-fold astigmatism field system, which was then compared with a double hexapole field system. Using this electron optical system, six-fold astigmatism was measured to be less than 0.1 mm at an acceleration voltage of 60 kV, showing that the system successfully compensated for six-fold astigmatism. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:958 / 961
页数:4
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