In this work,the high-energy-density plasmas(HEDP)evolved from joule-class-femtosecond-laser-irradiated nanowire-array(NWA)targets were numerically and experimentally studied.The results of particle-in-cell simulations indicate that ions accelerated in the sheath field around the surfaces of the nanowires are eventually confined in a plasma,contributing most to the high energy densities.The protons emitted from the front surfaces of the NWA targets provide rich information about the interactions that occur.We give the electron and ion energy densities for broad target parameter ranges.The ion energy densities from NWA targets were found to be an order of magnitude higher than those from planar targets,and the volume of the HEDP was several-fold greater.At optimal target parameters,8％of the laser energy can be converted to confined protons,and this results in ion energy densities at the GJ/cm3 level.In the experiments,the measured energy of the emitted protons reached 4 MeV,and the changes in energy with the NWA's parameters were found to fit the simulation results well.Experimental measurements of neutrons from 2H(d,n)3He fusion with a yield of(24±18)×106/J from deuterated polyethylene NWA targets also confirmed these results.

Defeng Kong;Guoqiang Zhang;Yinren Shou;Shirui Xu;Zhusong Mei;Zhengxuan Cao;Zhuo Pan;Pengjie Wang;Guijun Qi;Yao Lou;Zhiguo Ma;Haoyang Lan;Wenzhao Wang;Yunhui Li;Peter Rubovic;Martin Veselsky;Aldo Bonasera;Jiarui Zhao;Yixing Geng;Yanying Zhao;Changbo Fu;Wen Luo;Yugang Ma;Xueqing Yan;Wenjun Ma

State Key Laboratory of Nuclear Physics and Technology,and Key Laboratory of H EDP of the Ministry of Education,CAPT,School of Physics,Peking University,Beijing 100871,China;Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China;Key Laboratory of Nuclear Physics and Ion-Beam Application(MOE),Institute of Modern Physics,Fudan University,Shanghai 200433,China;School of Nuclear Science and Technology,University of South China,Hengyang 421001,China;INPAC and School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China;Shenzhen Institutes of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518055,China;Institute of Experimental and Applied Physics,Czech Technical University in Prague,Husova 240/5,11000 Prague 1,Czech Republic;ELI Beamlines Center,Institute of Physics of the Czech Academy of Sciences,252 41 Dolní B?e?any,Czechia;Cyclotron Institute,Texas A&M University,College Station,Texas 77843,USA;Laboratori Nazionali del Sud,INFN,via Santa Sofia,62,Catania 95123,Italy;Beijing Laser Acceleration Innovation Center,Huairou,Beijing 101400,China;Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan,Shanxi 030006,China

极端条件下的物质与辐射（英文）

[1]Defeng Kong;Guoqiang Zhang;Yinren Shou;Shirui Xu;Zhusong Mei;Zhengxuan Cao;Zhuo Pan;Pengjie Wang;Guijun Qi;Yao Lou;Zhiguo Ma;Haoyang Lan;Wenzhao Wang;Yunhui Li;Peter Rubovic;Martin Veselsky;Aldo Bonasera;Jiarui Zhao;Yixing Geng;Yanying Zhao;Changbo Fu;Wen Luo;Yugang Ma;Xueqing Yan;Wenjun Ma-.High-energy-density plasma in femtosecond-laser-irradiated nanowire-array targets for nuclear reactions)[J].极端条件下的物质与辐射（英文）,2022(06):29-40

joule

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