Directed pulsed neutron source generation from inverse kinematic reactions driven by intense lasers  

作　　者：Yilin Yao Zhenbo Wu Tao Ye Shaoping Zhu Xiantu He Bin Qiao 

机构地区：[1]Center for Applied Physics and Technology,HEDPS and State Key Laboratory of Nuclear Physics and Technology,School of Physics,Peking University,Beijing 100871,China [2]Institute of Applied Physics and Computational Mathematics,Beijing 100094,China [3]Frontiers Science Center for Nano-Optoelectronics,Peking University,Beijing 100094,China

出　　处：《Matter and Radiation at Extremes》2024年第6期19-28,共10页极端条件下的物质与辐射（英文）

基　　金：supported by the National Key R&D Program of China(Grant Nos.2022YFA1603200 and 2022YFA1603201);the National Natural Science Foundation of China(Grant Nos.12135001,11825502,and 11921006);the Strategic Priority Research Program of CAS(Grant No.XDA25050900);the National Natural Science Funds for Distinguished Young Scholars(Grant No.11825502)。

摘　　要：Neutron production driven by intense lasers utilizing inverse kinematic reactions is explored self-consistently by a combination of particle-in-cell simulations for laser-driven ion acceleration and Monte Carlo nuclear reaction simulations for neutron production.It is proposed that laser-driven light-sail acceleration from ultrathin lithium foils can provide an energetic lithium-ion beam as the projectile bombarding a light hydrocarbon target with sufficiently high flux for the inverse p(^(7)Li,n)reaction to be efficiently achieved.Three-dimensional self-consistent simulations show that a forward-directed pulsed neutron source with ultrashort pulse duration 3 ns,small divergence angle 260,and extremely high peak flux 3×10^(14)n/(cm^(2)·s)can be produced by petawatt lasers at intensities of 10^(21)W/cm^(2).These results indicate that a laser-driven neutron source based on inverse kinematics has promise as a novel compact pulsed neutron generator for practical applications,since the it can operate in a safe and repetitive way with almost no undesirable radiation.

关 键 词：INVERSE INTENSE ACCELERATION 

分 类 号：O571.53[理学—粒子物理与原子核物理] TN249[理学—物理]