Hydrodynamical model of QED cascade expansion in an extremely strong laser pulse

作     者：A.S.Samsonov I.Yu.Kostyukov E.N.Nerush 

作者机构：Institute of Applied Physics of the Russian Academy of Sciences46 Ulyanov St.Nizhny Novgorod 603950Russia 

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

年 卷 期：2021年第6卷第3期

页      面：8-23页

核心收录：

学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学] 

基　　金：This research was supported by the Russian Science Foundation(Grant No.20-12-00077)(PIC simulations,development of the analytical model,numerical scheme,and numerical solution of the model equations) the Foundation for the Advancement of Theoretical Physics and Mathematics“BASIS”(Grant No.19-1-5-10-1)(comparison to the simplified model developed in Ref.37) 

主　　题：expansion qualitatively dominance 

摘      要：The development of a self-sustained quantum electrodynamical(QED)cascade in a single strong laser pulse is studied analytically and numerically.A hydrodynamical approach is used to construct an analytical model of cascade evolution,which includes the key features of the cascade observed in 3D QED particle-in-cell(QED-PIC)simulations,such as the magnetic field dominance in the cascade plasma and laser energy *** equations of the model are derived in closed form and solved *** comparison between the solutions of the model equations and 3D QED-PIC simulations shows that our model is able to describe the complex nonlinear process of cascade development qualitatively *** regimes of the interaction based on the intensity of the laser pulse are revealed in both the solutions of the model equations and the results of the QED-PIC simulations.