Laser-Driven Neutron Generation Realizing Single-Shot Resonance Spectroscopy

被引:19
|
作者
Yogo, A. [1 ]
Lan, Z. [1 ]
Arikawa, Y. [1 ]
Abe, Y. [1 ]
Mirfayzi, S. R. [2 ]
Wei, T. [1 ]
Mori, T. [1 ]
Golovin, D. [1 ]
Hayakawa, T. [3 ,4 ]
Iwata, N. [1 ]
Fujioka, S. [1 ]
Nakai, M. [1 ]
Sentoku, Y. [1 ]
Mima, K. [1 ]
Murakami, M. [1 ]
Koizumi, M. [5 ]
Ito, F. [5 ]
Lee, J. [5 ]
Takahashi, T. [5 ]
Hironaka, K. [5 ]
Kar, S. [6 ]
Nishimura, H. [7 ]
Kodama, R. [1 ]
机构
[1] Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan
[2] Tokamak Energy Ltd, 173 Brook Dr, Abingdon OX14 4SD, England
[3] Natl Inst Quantum & Radiol Sci, Tokai, Ibaraki 3191106, Japan
[4] Natl Inst Technol, Tokai, Ibaraki 3191106, Japan
[5] Japan Atom Energy Agcy, Tokai, Ibaraki 3191195, Japan
[6] Queens Univ Belfast, Ctr Plasma Phys, Sch Math & Phys, Belfast BT7 1NN, North Ireland
[7] Fukui Univ Technol, Fukui 9100028, Japan
关键词
ION-ACCELERATION; PROTON GENERATION; HEAVY-ION; TRANSMISSION; RESOLUTION; ELECTRON; DETECTOR; PARTICLE; BEAMS;
D O I
10.1103/PhysRevX.13.011011
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Neutrons are powerful tools for investigating the structure and properties of materials used in science and technology. Recently, laser-driven neutron sources (LDNS) have attracted the attention of different communities, from science to industry, in a variety of applications, including radiography, spectroscopy, security, and medicine. However, the laser-driven ion acceleration mechanism for neutron generation and for establishing the scaling law on the neutron yield is essential to improve the feasibility of LDNS. In this paper, we report the mechanism that accelerates ions with spectra suitable for neutron generation. We show that the neutron yield increases with the fourth power of the laser intensity, resulting in the neutron generation of 3 x 1011 in 4 pi at a maximum, with 1.1 x 1019 W cm-2, 900 J, 1.5 ps lasers. By installing a "hand-size" moderator, which is specially designed for the LDNS, it is demonstrated that the efficient generation of epithermal (0.1-100 eV) neutrons enables the single-shot analysis of composite materials by neutron resonance transmission analysis (NRTA). We achieve the energy resolution of 2.3% for 5.19-eV neutrons 1.8 m downstream of the LDNS. This leads to the analysis of elements and isotopes within sub-mu s times and allows for high-speed nondestructive inspection.
引用
收藏
页数:12
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