Accounting for speckle-scale beam bending in classical ray tracing schemes for propagating realistic pulses in indirect drive ignition conditions

作     者：C.Ruyer P.Loiseau G.Riazuelo R.Riquier A.Debayle P.E.Masson-Laborde O.Morice C.Ruyer;P.Loiseau;G.Riazuelo;R.Riquier;A.Debayle;P.E.Masson-Laborde;O.Morice

作者机构：CEADAMDIFF-91297 ArpajonFrance CEALMCEUniversitéParis-Saclay91680 Bruyères-le-ChâtelFrance 

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2期

页      面：33-46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] 

基　　金：CEA-DAM 

主　　题：polarization beam bending 

摘      要：We propose a semi-analytical modeling of smoothed laser beam deviation induced by plasma *** on a Gaussian description of speckles,the model includes spatial,temporal,and polarization smoothing techniques,through fits coming from hydrodynamic simulations with a paraxial description of electromagnetic *** beam bending model is then incorporated into a ray tracing algorithm and carefully *** applied as a post-process to the propagation of the inner cone in a full-scale simulation of a National Ignition Facility(NIF)experiment,the beam bending along the path of the laser affects the refraction conditions inside the hohlraum and the energy deposition,and could explain some anomalous refraction measurements,namely,the so-called glint observed in some NIF experiments.