Experiments and simulations of isochorically heated warm dense carbon foam at the Texas Petawatt Laser

作     者：R.Roycroft P.A.Bradley E.McCary B.Bowers H.Smith G.M.Dyer B.J.Albright S.Blouin P.Hakel H.J.Quevedo E.L.Vold L.Yin B.M.Hegelich 

作者机构：The University of Texas at AustinAustinTexas 78712USA Los Alamos National LaboratoryLos AlamosNew Mexico 87545USA SLAC National Accelerator LaboratoryMenlo ParkCalifornia 94025USA 

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1期

页      面：21-30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：This work was supported by NNSA cooperative Agreement Grant No.DE-NA0002008 the DARPA PULSE program(No.12-63-PULSE-FP014) the Air Force Office of Scientific Research(Grant No.FA9550-14-1-0045) This work was performed under the auspices of the U.S.Department of Energy by the Triad National Security,LLC(Contract No.89233218CNA000001) Los Alamos National Laboratory and was supported by the LANL Office of Experimental Sciences programs.Simulations were run on the LANL Institutional Computing Clusters 

主　　题：heated carbon transparency 

摘      要：An experimental and simulation study of warm dense carbon foams at ambient density(ne∼10^(21) cm^(−3))is *** study of isochorically heated foams is motivated by their potential application in carbon-atmosphere white-dwarf envelopes,where there are modeling uncertainties due to the equation of *** foams are heated on an approximately picosecond time scale with a laser-accelerated proton *** cooling and expansion of the heated foams can be modeled with appropriately initialized radiation-hydrodynamics codes;xRAGE code is used in this *** primary experimental diagnostic is the streaked optical pyrometer,which images a narrow band of radiation from the rear surface of the heated *** are xRAGE modeling results for both solid aluminum targets and carbonized resorcinol-formaldehyde foam targets,showing that the foam appears to cool slowly on the pyrometer because of partial *** that simulations of cooling foam are processed properly,it is necessary to account for finite optical depth in the photosphere calculation,and the methods for performing that calculation are presented in depth.