Accomplishment of Numerical Simulation for a SSD Beam Propagation in a Large Scale Plasma

LI Bin1 LIU Zhanjun1 HAO Liang1 HU Xiaoyan1 ZHENG Chunyang1 XIANG Jiang1

(1.Institute of Applied Physics and Computational Mathematics, Beijing, China 100094)

【Abstract】Beam smoothing by spectral dispersion (SSD) technology is widely adopted in larger laser fusion facilities. Using intensity distribution of SSD beam at its focal plane as boundary condition of laser plasma simulation code LAP3D, we simulate the propagation of SSD beam in large scale hohlraum underdense plasma. High efficiency parallel calculation of intensity distribution of a SSD beam at its focal plane is accomplished with improved algorithm, and then the simulation of entire beam propagation can be processed. The effect of modulation frequency of SSD beam on beam propagation is analyzed.

【Keywords】 physical optics; beam smoothing; spectral dispersion smoothing; numerical simulation; laser plasma;

【DOI】

【Funds】 National Natural Science Foundation of China (11575035)

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(Translated by CAI ZJ)

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This Article

ISSN:0258-7025

CN: 31-1339/TN

Vol 44, No. 12, Pages 40-44

December 2017

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Article Outline

Abstract

  • 1 Introduction
  • 2 Intensity distribution form of the SSD beam
  • 3 Numerical model of the SSD beam
  • 4 Algorithm suitable for parallel calculation
  • 5 Influence of SSD beam modulation frequency on the beam propagation process
  • 6 Conclusions
  • References