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Title: High-charge energetic ions generated by intersecting laser pulses

Abstract

Ion acceleration from the interaction of two intersecting intense laser pulses with an overdense plasma is investigated using a three-dimensional particle-in-cell simulation. It is found that, comparing with the single-pulse case, the charge of the resulting energetic ion bunch can be increased by more than an order of magnitude without much loss of quality. Dependence of the ion charge on the interaction parameters, including separation distance and incidence angles of the lasers, is considered. It is shown that the charge of the accelerated ion bunch can be optimized by controlling the degree of laser overlapping. The improved performance can be attributed to the enhanced laser intensity as well as stochastic heating of the accelerated electrons. Since at present the intensity of readily available lasers is limited, the two pulse scheme should be useful for realizing higher laser intensity in order to achieve higher-energy target normal sheath acceleration ions.

Authors:
 [1];  [2];  [3];  [2];  [4];  [2];  [5];  [2]
  1. Institute of Materials, China Academy of Engineering Physics, P.O. Box 9071, Mianyang 621907 (China)
  2. (China)
  3. Research Center of Laser Fusion, China Academy of Engineering Physics, P.O. Box 919-986, Mianyang 621900 (China)
  4. Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027 (China)
  5. School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062 (China)
Publication Date:
OSTI Identifier:
22599986
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 23; Journal Issue: 8; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCELERATION; COMPARATIVE EVALUATIONS; DISTANCE; ELECTRONS; INCIDENCE ANGLE; LASERS; PLASMA; PULSES; SIMULATION; STOCHASTIC PROCESSES; TAIL IONS; THREE-DIMENSIONAL CALCULATIONS

Citation Formats

Yang, L., Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027, Deng, Z. G., School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, Yu, M. Y., Department of Physics, Zhejiang University, Hangzhou 310027, Wang, X. G., E-mail: wangxg@snnu.edu.cn, and Department of Physics, Zhejiang University, Hangzhou 310027. High-charge energetic ions generated by intersecting laser pulses. United States: N. p., 2016. Web. doi:10.1063/1.4960318.
Yang, L., Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027, Deng, Z. G., School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, Yu, M. Y., Department of Physics, Zhejiang University, Hangzhou 310027, Wang, X. G., E-mail: wangxg@snnu.edu.cn, & Department of Physics, Zhejiang University, Hangzhou 310027. High-charge energetic ions generated by intersecting laser pulses. United States. doi:10.1063/1.4960318.
Yang, L., Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027, Deng, Z. G., School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, Yu, M. Y., Department of Physics, Zhejiang University, Hangzhou 310027, Wang, X. G., E-mail: wangxg@snnu.edu.cn, and Department of Physics, Zhejiang University, Hangzhou 310027. 2016. "High-charge energetic ions generated by intersecting laser pulses". United States. doi:10.1063/1.4960318.
@article{osti_22599986,
title = {High-charge energetic ions generated by intersecting laser pulses},
author = {Yang, L. and Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027 and Deng, Z. G. and School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062 and Yu, M. Y. and Department of Physics, Zhejiang University, Hangzhou 310027 and Wang, X. G., E-mail: wangxg@snnu.edu.cn and Department of Physics, Zhejiang University, Hangzhou 310027},
abstractNote = {Ion acceleration from the interaction of two intersecting intense laser pulses with an overdense plasma is investigated using a three-dimensional particle-in-cell simulation. It is found that, comparing with the single-pulse case, the charge of the resulting energetic ion bunch can be increased by more than an order of magnitude without much loss of quality. Dependence of the ion charge on the interaction parameters, including separation distance and incidence angles of the lasers, is considered. It is shown that the charge of the accelerated ion bunch can be optimized by controlling the degree of laser overlapping. The improved performance can be attributed to the enhanced laser intensity as well as stochastic heating of the accelerated electrons. Since at present the intensity of readily available lasers is limited, the two pulse scheme should be useful for realizing higher laser intensity in order to achieve higher-energy target normal sheath acceleration ions.},
doi = {10.1063/1.4960318},
journal = {Physics of Plasmas},
number = 8,
volume = 23,
place = {United States},
year = 2016,
month = 8
}
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