中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
An accurate analytical approach to electron crystallography

文献类型:期刊论文

作者Yang, QB ; Wang, YM ; Liu, QX ; Yan, XH
刊名ULTRAMICROSCOPY
出版日期2001
卷号87期号:4页码:177
关键词ANGSTROM-RESOLUTION RIBOSOMAL-SUBUNIT MICROSCOPY MICROGRAPHS HOLOGRAPHY SIMULATION COMPLEX
ISSN号0304-3991
通讯作者Yang, QB: Xiangtan Univ, Inst Modern Phys, Xiangtan 411105, Peoples R China.
中文摘要A much more accurate analytical expression of dynamical electron diffraction than the phase object approximation (POA) formula has been derived in this paper which decreases the restriction of sample thickness up to almost one order of magnitude compared to POA theory. The importance of the new expression is twofold. First, a sample with such a thickness that new expression remains valid can be prepared experimentally. Second, the new expression reveals a clear and straightforward relationship between the wave function and crystal potential. In the expression, the effect of dynamical diffraction on wave function can be simply attributed to two factors T-P((D))=(sin(lambda pi zg(2)))/(4 pi (2)g(2)) and T-A((D)) = [1 - cos(lambda pi zg(2))]/4 pi (2)g(2). Compared to the effect of transfer functions of an electron microscope on wave function, we found that T-P((d)) and T-A((d)) play the same role as transfer function but an independent of the instrument. For this reason, we here call the former as "extrinsic transfer functions" and the latter as "intrinsic" ones. In principle, one should correct not only extrinsic transfer functions but also intrinsic ones if one desires to achieve higher resolution. (C) 2001 Elsevier Science B.V. All rights reserved.
收录类别SCI
语种英语
公开日期2013-09-17
源URL[http://ir.iphy.ac.cn/handle/311004/33608]  
专题物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式
GB/T 7714
Yang, QB,Wang, YM,Liu, QX,et al. An accurate analytical approach to electron crystallography[J]. ULTRAMICROSCOPY,2001,87(4):177.
APA Yang, QB,Wang, YM,Liu, QX,&Yan, XH.(2001).An accurate analytical approach to electron crystallography.ULTRAMICROSCOPY,87(4),177.
MLA Yang, QB,et al."An accurate analytical approach to electron crystallography".ULTRAMICROSCOPY 87.4(2001):177.

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来源:物理研究所

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