Neutron Generation by Laser-Driven Spherically Convergent Plasma Fusion

doi:10.1103/PhysRevLett.118.165001

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	Neutron Generation by Laser-Driven Spherically Convergent Plasma Fusion
	Ren, G. ; Yan, J. ; Liu, J. ; Lan, K. ; Chen, Y. H. ; Huo, W. Y. ; Fan, Z. ; Zhang, X. ; Zheng, J. ; Chen, Z. ; Jiang, W. ; Chen, L. ; Tang, Q. ; Yuan, Z. ; Wang, F. ; Jiang, S. ; Ding, Y. ; Zhang, W. ; He, X. T.
刊名	PHYSICAL REVIEW LETTERS
	2017
关键词	NATIONAL IGNITION FACILITY TAYLOR INSTABILITY PARTICLE IMPLOSION CLUSTERS
DOI	10.1103/PhysRevLett.118.165001
英文摘要	We investigate a new laser-driven spherically convergent plasma fusion scheme (SCPF) that can produce thermonuclear neutrons stably and efficiently. In the SCPF scheme, laser beams of nanosecond pulse duration and 10(14)-10(15) W/cm(2) intensity uniformly irradiate the fuel layer lined inside a spherical hohlraum. The fuel layer is ablated and heated to expand inwards. Eventually, the hot fuel plasmas converge, collide, merge, and stagnate at the central region, converting most of their kinetic energy to internal energy, forming a thermonuclear fusion fireball. With the assumptions of steady ablation and adiabatic expansion, we theoretically predict the neutron yield Y-n to be related to the laser energy E-L, the hohlraum radius R-h, and the pulse duration tau through a scaling law of Y-n alpha (E-L/R-h(1.2) tau(0.2))(2.5). We have done experiments at the ShengGuangIII-prototype facility to demonstrate the principle of the SCPF scheme. Some important implications are discussed.; National Basic Research Program of China [2013CB834100]; National Natural Science Foundation of China [11475027, 11674034, 11475032]; SCI(E); ARTICLE; 16; 118
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/473950]
专题	工学院
推荐引用方式 GB/T 7714	Ren, G.,Yan, J.,Liu, J.,et al. Neutron Generation by Laser-Driven Spherically Convergent Plasma Fusion[J]. PHYSICAL REVIEW LETTERS,2017.
APA	Ren, G..,Yan, J..,Liu, J..,Lan, K..,Chen, Y. H..,...&He, X. T..(2017).Neutron Generation by Laser-Driven Spherically Convergent Plasma Fusion.PHYSICAL REVIEW LETTERS.
MLA	Ren, G.,et al."Neutron Generation by Laser-Driven Spherically Convergent Plasma Fusion".PHYSICAL REVIEW LETTERS (2017).