| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Improved method for studying the propagation dynamics of ultrafast electron pulses based on mean-field models |
| Meng-Chao Li(李梦超)1,2, Xuan Wang(王瑄)1, Guo-Qian Liao(廖国前)1, Yu-Tong Li(李玉同)1,2,3, Jie Zhang(张杰)3,4 |
1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
3 Collaborative Innovation Centre of Inertial Fusion Science and Applications, Shanghai Jiao Tong University, Shanghai 200240, China;
4 Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China |
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Abstract We have studied the propagation dynamics of ultrafast electron pulses by using an improved mean-field model, in which the propagation of the electron pulses across the boundary of the acceleration region is explicitly considered. A large decrease in the speed spread of the electron pulses (we called “boundary kick”) is observed and properly treated leading to a significant improvement in the simulation accuracy, particularly when the density of electrons is very large. We show that our method is consistent with the simulation by the N-particle method, while others can introduce factorial error.
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Received: 18 December 2016
Revised: 22 February 2017
Accepted manuscript online:
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PACS:
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41.85.Ja
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(Particle beam transport)
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61.05.jd
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(Theories of electron diffraction and scattering)
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29.27.Bd
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(Beam dynamics; collective effects and instabilities)
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06.60.Jn
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(High-speed techniques)
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| Fund: Project supported by the National Basic Research Program of China (Grant No. 2013CBA01501) and the Science Challenge Program and the Strategic Pilot Project of the Chinese Academy of Sciences. |
Corresponding Authors:
Xuan Wang, Yu-Tong Li
E-mail: xw@iphy.ac.cn;ytli@iphy.ac.cn
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Cite this article:
Meng-Chao Li(李梦超), Xuan Wang(王瑄), Guo-Qian Liao(廖国前), Yu-Tong Li(李玉同), Jie Zhang(张杰) Improved method for studying the propagation dynamics of ultrafast electron pulses based on mean-field models 2017 Chin. Phys. B 26 054103
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