Fuel-ion diffusion in shock-driven inertial confinement fusion implosions

作     者：Hong Sio Chikang Li Cody E.Parker Brandon Lahmann Ari Le Stefano Atzeni Richard D.Petrasso Hong Sio;Chikang Li;Cody E. Parker;Brandon Lahmann;Ari Le;Stefano Atzeni;Richard D. Petrasso

作者机构：Plasma Science and Fusion CenterMassachusetts Institute of TechnologyCambridgeMassachusetts 02139USA Los Alamos National LaboratoryLos AlamosNew Mexico 87545USA Dipartimento SBAIUniversita degli Studi di Roma“La Sapienza”Via Antonio Scarpa 1400161RomaItaly 

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

年 卷 期：2019年第4卷第5期

页      面：50-54页

核心收录：

学科分类：0808[工学-电气工程] 07[理学] 0809[工学-电子科学与技术（可授工学、理学学位）] 0807[工学-动力工程及工程热物理] 0827[工学-核科学与技术] 0703[理学-化学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Nos.DE-NA0001857 DE-NA0002949 and DENA0002905.The work was also supported in part by NLUF(DE-NA0002035).H.S.was supported by a DOE NNSA SSGF Fellowship(DE-FC52-08NA28752)during this work.S.A.acknowledges Sapienza Project 2016 No.RM11615502006B04 as well as EUROfusion Project Nos.AWP17-ENR-IFE-CEA-01 and ENR-IFE19.CEA-01.A.L.acknowledges the LANL LDRD program. 

主　　题：diffusion shock filled 

摘      要：The impact of fuel-ion diffusion in inertial confinement fusion implosions is assessed using nuclear reaction yield ratios and reaction histories.In T3He-gas-filled(with trace D)shock-driven implosions,the observed TT/T3He yield ratio is∼23lower than expected from temperature scaling.InD3He-gas-filled(with trace T)shock-driven implosions,the timing of theD3He reaction history is∼50 ps earlier than those of the DT reaction histories,and average-ion hydrodynamic simulations cannot reconcile this timing difference.Both experimental observations are consistent with reduced T ions in the burn region as predicted by multi-ion diffusion theory and particle-in-cell simulations.