Compact neutron source from head-on collision of high energy density plasma jets
Compact neutron source from head-on collision of high energy density plasma jets
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DOI：
10.3389/fphy.2022.1026496
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发表时间：
2022-10
期刊：
影响因子：
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通讯作者：
Ye Cui;Y. Ke;Xiao-Hu Yang;Yanyun Ma;F. Shao
中科院分区：
文献类型：
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作者：
Ye Cui;Y. Ke;Xiao-Hu Yang;Yanyun Ma;F. Shao
我们提出了一个新的方案，以产生一个短的持续时间的中子源，该计划是在二维辐射流体动力学模拟验证。当激光束照射半张角为60 °的氘代聚苯乙烯圆锥体时，由于会聚效应，产生了高能量密度的等离子体射流。当两个激光驱动的反向传播射流以迎头构型碰撞时，动能有效地转化为内能，引起密度和温度的显著增加。然后，氘-氘热核反应被触发，大量的中子被释放出来。模拟结果表明，总中子产额高达6.6 × 108，持续时间为103 ps，为在实验中实现高分辨率的超快诊断提供了一条新途径。
We propose a new scheme to generate a neutron source with a short duration, and the scheme is validated in two-dimensional radiation hydrodynamic simulations. When a laser beam irradiates a deuterated polystyrene cone with a half-opening angle of 60 ° , high energy density plasma jets are produced due to the converging effect. As two laser-driven counter-propagating jets collide in a head-on configuration, the kinetic energy converts into internal energy efficiently, inducing a significant increase in density and temperature. Then, deuteron–deuteron thermonuclear reactions are triggered, and plenty of neutrons are released. The simulation results show that the total neutron yield is as high as 6.6 × 10 8 with a duration of 103 ps, providing a new way to achieve ultrafast diagnosis with high resolution in experiments.