Dynamically pre-compressed hydrocarbons studied by self-impedance mismatch

作     者：N.J.Hartley C.Zhang X.Duan L.G.Huang S.Jiang Y.Li L.Yang A.Pelka Z.Wang J.Yang D.Kraus N.J.Hartley;C.Zhang;X.Duan;L.G.Huang;S.Jiang;Y.Li;L.Yang;A.Pelka;Z.Wang;J.Yang;D.Kraus

作者机构：Helmholtz-Zentrum Dresden-Rossendorf01328 DresdenGermany Laser Fusion Research CenterChina Academy of Engineering PhysicsMianyangChina Institute of Fluid PhysicsChina Academy of Engineering PhysicsMianyangChina European XFEL GmbH22869 SchenefeldGermany Technische Universitat Dresden01062 DresdenGermany 

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

年 卷 期：2020年第5卷第2期

页      面：26-32页

核心收录：

学科分类：0808[工学-电气工程] 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] 0807[工学-动力工程及工程热物理] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0827[工学-核科学与技术] 0703[理学-化学] 0803[工学-光学工程] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：The authors would like to thank the technical teams at LFRC for their invaluable work producing the targets and operating the facility.N.J.H.and D.K.were supported by the Helmholtz Association under Grant No.VH-NG-1141.Y.L.was supported by the National Natural Science Foundation of China(Grant No.11605189) 

主　　题：impedance reflectivity shock 

摘      要：Using the SG-III prototype laser at China Academy of Engineering Physics,Mianyang,we irradiated polystyrene(CH)samples with a thermal radiation drive,reaching conditions on the principal Hugoniot up to P≈1 TPa(10 Mbar),and away from the Hugoniot up to P≈300 GPa(3 Mbar).The response of each sample was measured with a velocity interferometry diagnostic to determine the material and shock velocity,and hence the conditions reached,and the reflectivity of the sample,from which changes in the conductivity can be *** applying the selfimpedance mismatch technique with the measured velocities,the pressure and density of thermodynamic points away from the principal Hugoniot were *** results show an unexpectedly large reflectivity at the highest shock pressures,while the off-Hugoniot points agree with previous work suggesting that shock-compressed CH conductivity is primarily temperature-dependent.