Bubble core field modification by residual electrons inside the bubble
Abstract
Bubble core field modification due to the nondepleted electrons present inside the bubble is investigated theoretically. These residual electrons induce charge and current densities that can induce the bubble core field modification as well as the bubble shape change. It is found that the electrons entering into the bubble move backward at almost light speed and would weaken the transverse bubble fields. This reduces the ratio of longitudinal to transverse radius of the bubble. For the longitudinal bubble field, two effects compensate with each other because of their competition between the enhancement by the shortening of bubble shape and the reduction by the residual electrons. Therefore the longitudinal field is hardly changeable. As a comparison we perform particle-in-cell simulations and it is found that the results from theoretical consideration are consistent with simulation results. Implication of the modification of fields on bubble electron acceleration is also discussed briefly.
- Authors:
-
- College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875 (China)
- School of Information Engineering, Nanchang University, Nanchang 330031 (China)
- Publication Date:
- OSTI Identifier:
- 21532007
- Resource Type:
- Journal Article
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 17; Journal Issue: 11; Other Information: DOI: 10.1063/1.3511779; (c) 2010 American Institute of Physics; Journal ID: ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 43 PARTICLE ACCELERATORS; BUBBLES; CHARGE DENSITY; CHARGED-PARTICLE TRANSPORT; CURRENT DENSITY; ELECTRONS; MODIFICATIONS; PLASMA DENSITY; PLASMA SIMULATION; ELEMENTARY PARTICLES; FERMIONS; LEPTONS; RADIATION TRANSPORT; SIMULATION
Citation Formats
Haicheng, Wu, Center for Applied Physics and Technology, Peking University, Beijing 100084, Baisong, Xie, Xueyan, Zhao, Shan, Zhang, Department of Mathematics and Physics, Shijiazhuang Railway Institute, Shijiazhuang 050043, Xueren, Hong, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, and Mingping, Liu. Bubble core field modification by residual electrons inside the bubble. United States: N. p., 2010.
Web. doi:10.1063/1.3511779.
Haicheng, Wu, Center for Applied Physics and Technology, Peking University, Beijing 100084, Baisong, Xie, Xueyan, Zhao, Shan, Zhang, Department of Mathematics and Physics, Shijiazhuang Railway Institute, Shijiazhuang 050043, Xueren, Hong, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, & Mingping, Liu. Bubble core field modification by residual electrons inside the bubble. United States. https://doi.org/10.1063/1.3511779
Haicheng, Wu, Center for Applied Physics and Technology, Peking University, Beijing 100084, Baisong, Xie, Xueyan, Zhao, Shan, Zhang, Department of Mathematics and Physics, Shijiazhuang Railway Institute, Shijiazhuang 050043, Xueren, Hong, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, and Mingping, Liu. 2010.
"Bubble core field modification by residual electrons inside the bubble". United States. https://doi.org/10.1063/1.3511779.
@article{osti_21532007,
title = {Bubble core field modification by residual electrons inside the bubble},
author = {Haicheng, Wu and Center for Applied Physics and Technology, Peking University, Beijing 100084 and Baisong, Xie and Xueyan, Zhao and Shan, Zhang and Department of Mathematics and Physics, Shijiazhuang Railway Institute, Shijiazhuang 050043 and Xueren, Hong and College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070 and Mingping, Liu},
abstractNote = {Bubble core field modification due to the nondepleted electrons present inside the bubble is investigated theoretically. These residual electrons induce charge and current densities that can induce the bubble core field modification as well as the bubble shape change. It is found that the electrons entering into the bubble move backward at almost light speed and would weaken the transverse bubble fields. This reduces the ratio of longitudinal to transverse radius of the bubble. For the longitudinal bubble field, two effects compensate with each other because of their competition between the enhancement by the shortening of bubble shape and the reduction by the residual electrons. Therefore the longitudinal field is hardly changeable. As a comparison we perform particle-in-cell simulations and it is found that the results from theoretical consideration are consistent with simulation results. Implication of the modification of fields on bubble electron acceleration is also discussed briefly.},
doi = {10.1063/1.3511779},
url = {https://www.osti.gov/biblio/21532007},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 11,
volume = 17,
place = {United States},
year = {Mon Nov 15 00:00:00 EST 2010},
month = {Mon Nov 15 00:00:00 EST 2010}
}