Effects of electron heating and surface rippling on Rayleigh–Taylor instability in radiation pressure acceleration

作     者：X.Z.Wu Y.R.Shou Z.B.Guo H.G.Lu J.X.Liu D.Wu Z.Gong X.Q.Yan X.Z.Wu;Y.R.Shou;Z.B.Guo;H.G.Lu;J.X.Liu;D.Wu;Z.Gong;X.Q.Yan

作者机构：State Key Laboratory of Nuclear Physics and TechnologySchool of PhysicsPeking UniversityBeijing 100871China Center for Relativistic Laser ScienceInstitute for Basic ScienceGwangju 61005Republic of Korea Max-Planck-Institut für KernphysikSaupfercheckweg 1Heidelberg 69117Germany Collaborative Innovation Center of Extreme OpticsShanxi UniversityShanxi 030006China 

出 版 物：《Matter and Radiation at Extremes》 (极端条件下的物质与辐射（英文）)

年 卷 期：2023年第8卷第3期

页      面：47-54页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：This work was supported by the National Natural Science Foundation of China(Grant No.11921006) the Beijing Outstanding Young Scientists Program,and the National Grand Instrument Project(No.2019YFF01014400) The simulations are supported by the High-Performance Computing Platform of Peking University 

主　　题：acceleration surface eventually 

摘      要：The acceleration of ultrathin targets driven by intense laser pulses induces Rayleigh–Taylor-like *** from laser and target con-figurations,we find that electron heating and surface rippling,effects inherent to the interaction process,have an important role in instability evolution and *** employing a simple analytical model and two-dimensional particle-in-cell simulations,we show that the onset of electron heating in the early stage of the acceleration suppresses the growth of small-scale modes,but it has little influence on the growth of large-scale modes,which thus become *** the growth of surface ripples,a mechanism that can significantly influence the growth of these large-scale modes is *** laser field modulation caused by surface rippling generates an oscillatory ponderomotive force,directly modulating transverse electron density at a faster growth rate than that of ions and eventually enhancing instability *** results show that when surface deformation becomes obvious,electron surface oscillation at 2ω0(whereω0 is the laser frequency)is excited simultaneously,which can be seen as a signature of this mechanism.