摘要
The parametric instability related to ion motion and the resulting cross-beam energy transfer are important aspects in the physics of inertial confinement fusion.The numerical simulation of the above physical problems still faces great technical challenges.This paper introduces a 2D hybrid-kinetic particle-in-cell(PIC)code,CBETor.In this code,the motion of ions is described by the kinetic method,the motion of electrons is described by the simplified fluid method and the propagation of laser in plasma is described by solving the wave equation.We use CBETor and the popular fully kinetic PIC code EPOCH to simulate the stimulated Brillouin scattering and cross-beam energy transfer process,respectively.The physical images are in good agreement,but CBETor can significantly reduce the amount of calculation.With the premise of correctly simulating the ion dynamics,our hybrid-kinetic code can effectively suppress the noise of numerical simulation and significantly expand the simulation scale of physical problems.CBETor is very suitable for simulating the physical process dominated by ion motion in the interaction of medium intensity laser and underdense plasma.
作者
Jinlong JIAO
Hezi WANG
Hongyu ZHOU
Yan YIN
Bin QIAO
Hongbin ZHUO
矫金龙;汪鹤子;周泓宇;银燕;乔宾;卓红斌(Department of Physics,National University of Defense Technology,Changsha 410073,People's Republic of China;Zhejiang Institution of Modern Physics,Department of Physics,Zhejiang University,Hangzhou 310027,People's Republic of China;Center for Applied Physics and Technology,HEDPS,SKLNPT,and School of Physics,Peking University,Beijing 100871,People's Republic of China;Center for Advanced Material Diagnostic Technology,Shenzhen Technology University,Shenzhen 518118,People's Republic of China)
基金
supported by National Natural Science Foundation of China (Nos. 11774430, 11875091, 12075157 and 11975062)
