Simulation study on the optimal shape of electrodes quadrupole electrostatic deflectors for the UTEM
In this paper, the electrostatic field of a quadrupole electrostatic deflector used in ultrafast transmission electron microscopy is simulated. When the electrodes of the deflector are arcs and straight plates with different degrees of curvature, there is a significant difference in the distribution...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Results in Physics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379724007848 |
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| author | He Chen Zhongwen Li Jun Li Huanfang Tian Huaixin Yang Jianqi Li |
| author_facet | He Chen Zhongwen Li Jun Li Huanfang Tian Huaixin Yang Jianqi Li |
| author_sort | He Chen |
| collection | DOAJ |
| description | In this paper, the electrostatic field of a quadrupole electrostatic deflector used in ultrafast transmission electron microscopy is simulated. When the electrodes of the deflector are arcs and straight plates with different degrees of curvature, there is a significant difference in the distribution of the electric field at the center. The electric field distribution results of different initial electrode models were obtained by simulation, and the ‘standard deviation of electric field strength’ was defined to assess the uniformity of the central electric field distribution. The optimal arc electrode model can be obtained by fitting the cross-sectional electric field parameters obtained from the simulation. By further simulating and calculating the particle beam trajectory of the optimized model of the quadrupole electrostatic deflector electrode, it can be verified that the image quality of the optimal model is the most ideal. Then, this paper presents the optimal circular arc electrode structure parameters for a series of installation apertures, providing a reference for electrode design in relevant instruments. |
| format | Article |
| id | doaj-art-9da6132961d8463b8fea6ca472fc8cb0 |
| institution | Kabale University |
| issn | 2211-3797 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj-art-9da6132961d8463b8fea6ca472fc8cb02025-01-18T05:04:34ZengElsevierResults in Physics2211-37972025-01-0168108099Simulation study on the optimal shape of electrodes quadrupole electrostatic deflectors for the UTEMHe Chen0Zhongwen Li1Jun Li2Huanfang Tian3Huaixin Yang4Jianqi Li5Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, ChinaBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; Center for Biological Imaging, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China; Corresponding authors.Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; School of Physical Sciences, University of Chinese Academy of Science, Beijing 100190, ChinaBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; School of Physical Sciences, University of Chinese Academy of Science, Beijing 100190, ChinaBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; School of Physical Sciences, University of Chinese Academy of Science, Beijing 100190, ChinaBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; School of Physical Sciences, University of Chinese Academy of Science, Beijing 100190, China; Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China; Corresponding authors.In this paper, the electrostatic field of a quadrupole electrostatic deflector used in ultrafast transmission electron microscopy is simulated. When the electrodes of the deflector are arcs and straight plates with different degrees of curvature, there is a significant difference in the distribution of the electric field at the center. The electric field distribution results of different initial electrode models were obtained by simulation, and the ‘standard deviation of electric field strength’ was defined to assess the uniformity of the central electric field distribution. The optimal arc electrode model can be obtained by fitting the cross-sectional electric field parameters obtained from the simulation. By further simulating and calculating the particle beam trajectory of the optimized model of the quadrupole electrostatic deflector electrode, it can be verified that the image quality of the optimal model is the most ideal. Then, this paper presents the optimal circular arc electrode structure parameters for a series of installation apertures, providing a reference for electrode design in relevant instruments.http://www.sciencedirect.com/science/article/pii/S2211379724007848Quadrupole electrostatic deflectorElectric fieldElectrode shapeUltrafast transmission electron microscope |
| spellingShingle | He Chen Zhongwen Li Jun Li Huanfang Tian Huaixin Yang Jianqi Li Simulation study on the optimal shape of electrodes quadrupole electrostatic deflectors for the UTEM Results in Physics Quadrupole electrostatic deflector Electric field Electrode shape Ultrafast transmission electron microscope |
| title | Simulation study on the optimal shape of electrodes quadrupole electrostatic deflectors for the UTEM |
| title_full | Simulation study on the optimal shape of electrodes quadrupole electrostatic deflectors for the UTEM |
| title_fullStr | Simulation study on the optimal shape of electrodes quadrupole electrostatic deflectors for the UTEM |
| title_full_unstemmed | Simulation study on the optimal shape of electrodes quadrupole electrostatic deflectors for the UTEM |
| title_short | Simulation study on the optimal shape of electrodes quadrupole electrostatic deflectors for the UTEM |
| title_sort | simulation study on the optimal shape of electrodes quadrupole electrostatic deflectors for the utem |
| topic | Quadrupole electrostatic deflector Electric field Electrode shape Ultrafast transmission electron microscope |
| url | http://www.sciencedirect.com/science/article/pii/S2211379724007848 |
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