An accurate multislice method for low-energy transmission electron microscopy
文献类型：期刊论文
| 作者 | Cai, Canying1,2,3; Chen, Jianghua1 |
| 刊名 | MICRON
 |
| 出版日期 | 2012-02-01 |
| 卷号 | 43页码:374-379 |
| 关键词 | Image Simulation Multislice Method Real Space Method High-energy Approximation |
| ISSN号 | 0968-4328 |
| DOI | 10.1016/j.micron.2011.09.018 |
| 文献子类 | Review |
| 英文摘要 | The conventional multislice method (CMS), originally proposed by Cowley and Moodie (1957), is an important algorithm for image and electron diffraction calculations in transmission electron microscopy. Nevertheless, this method is based on the so-called high-energy approximation, which neglects the second differential term partial derivative(2)phi(r)/partial derivative z(2) to greatly simplify the calculation without severe loss of accuracy. In the current study, we show that for low-energy transmission electron microscopy (LE-TEM) (<100 kV), the high-energy approximation error becomes large and the accurate multislice method, proposed by Chen and Van Dyck (1997), can be used as an alternative method to obtain more accurate calculations. The accurate multislice method, called the revised real space method (RRS) in this paper, can be realized by treating the propagation and scattering as an entirety in real space. A detailed comparison of the numerical results of the RRS and CMS at different accelerating voltages, Debye-Waller factors, and beam tilts is performed. Results show that for image and diffraction simulations in LE-TEM. CMS is no longer sufficiently accurate and the RRS procedure can be used as an alternative method with reasonable computing time. (C) 2011 Elsevier Ltd. All rights reserved. |
| WOS关键词 | DYNAMICAL THEORY ; DIFFRACTION ; SCATTERING ; CRYSTALS ; SIMULATION ; IMAGES ; HREM |
| 语种 | 英语 |
| WOS记录号 | WOS:000299605300038 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.186/handle/113462/48867]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Chen, Jianghua |
| 作者单位 | 1.Hunan Univ, Coll Mat Sci & Engn, Ctr High Resolut Electron Microscopy, Changsha 410082, Hunan, Peoples R China 2.Xiangtan Univ, Inst Modern Phys, Xiangtan 411105, Peoples R China 3.Xiangtan Univ, Minist Educ, Key Lab Low Dimens Mat & Applicat Technol, Xiangtan 411105, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, Canying,Chen, Jianghua. An accurate multislice method for low-energy transmission electron microscopy[J]. MICRON,2012,43:374-379. |
| APA | Cai, Canying,&Chen, Jianghua.(2012).An accurate multislice method for low-energy transmission electron microscopy.MICRON,43,374-379. |
| MLA | Cai, Canying,et al."An accurate multislice method for low-energy transmission electron microscopy".MICRON 43(2012):374-379. |
入库方式： OAI收割
来源：近代物理研究所
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