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Study of laser plasma interactions using one-dimensional particle-in-cell code in kinetic regime

Zou Chang-Lin Ye Wen-Hua Lu Xin-Pei

Study of laser plasma interactions using one-dimensional particle-in-cell code in kinetic regime

Zou Chang-Lin, Ye Wen-Hua, Lu Xin-Pei
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  • Received Date:  04 June 2013
  • Accepted Date:  02 December 2013
  • Published Online:  20 April 2014

Study of laser plasma interactions using one-dimensional particle-in-cell code in kinetic regime

  • 1. State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China;
  • 2. Institute of Applied Physics and Computational Mathematics, Beijing 100088, China

Abstract: Stimulated Raman scatting (SRS), which is one of the parametric processes of laser-plasma interactions, is examined by an explicit, electromagnetic, relativistic kinetic particle-in-cell code in one dimension. The code algorithm and implementation details are discussed. It is found that kinetic effects are important to SRS instability. Time-averaged reflectivity onsets at threshold intensity, and saturates at higher intensity. Backward SRS bursts in sub-picosecond, periodically. Kinetic ions initially delay the growth of SRS. Electron trapping results in the SRS bursts. The saturation of SRS results from the nonlinear frequency shift of Langmuir wave. Work is underway to add binary Coulomb collision to parallelize it, and to extend the code to 2D3V.

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