Two-plasmon-decay instability stimulated by dual laser beams in inertial confinement fusionOA
Two-plasmon-decay instability(TPD)poses a critical target preheating risk in direct-drive inertial confinement fusion.In this paper,TPD collectively driven by dual laser beams consisting of a normal-incidence laser beam(Beam-N)and a large-angle-incidence laser beam(Beam-L)is investigated via particle-in-cell simulations.It is found that significant TPD growth can develop in this regime at previously unexpected low laser intensities if the intensity of Beam-L exceeds the large-angle-incidence threshold.Both beams contribute to the growth of TPD in a“seed-amplification”manner in which the absolute instability driven by Beam-L provides the seeds that are convectively amplified by Beam-N,making TPD energetically important and causing significant pump depletion and hot-electron generation.
C.-W.Lian;Y.Ji;R.Yan;J.Li;L.-F.Wang;Y.-K.Ding;J.Zheng
Department of Modern Mechanics,University of Science and Technology of China,Hefei,Anhui 230026,ChinaDepartment of Modern Mechanics,University of Science and Technology of China,Hefei,Anhui 230026,ChinaDepartment of Modern Mechanics,University of Science and Technology of China,Hefei,Anhui 230026,China Collaborative Innovation Center of IFSA,Shanghai Jiao Tong University,Shanghai 200240,ChinaDepartment of Plasma Physics and Fusion Engineering,University of Science and Technology of China,Hefei 230026,ChinaInstitute of Applied Physics and Computational Mathematics,Beijing 100088,ChinaInstitute of Applied Physics and Computational Mathematics,Beijing 100088,ChinaCollaborative Innovation Center of IFSA,Shanghai Jiao Tong University,Shanghai 200240,China Department of Plasma Physics and Fusion Engineering,University of Science and Technology of China,Hefei 230026,China
电子信息工程
laserpumpdecay
《Matter and Radiation at Extremes》 2025 (1)
P.48-56,9
supported by the National Natural Science Foundation of China(NSFC)under Grant Nos.12375243 and 12388101by the Strategic Priority Research Program of the Chinese Academy of Sciences under Grant Nos.XDA25050400,XDA25010200,and XDA25010100,by the Science Challenge Project,and by the Fundamental Research Funds for the Central Universities.The numerical calculations in this paper were performed on the supercomputing system in the Supercomputing Center of the University of Science and Technology of China.
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