Thermal neutron fluence measurement using a cadmium differential method at the laser-driven neutron source

Mori, Takasuke; Yogo, Akifumi; Hayakawa, Takehito; Mirfayzi, S. R.; Lan, Zechen; Wei, Tianyun; Abe, Yuki; Arikawa, Yasunobu; Nakai, M.; Mima, Kunioki; Nishimura, Hiroaki; Fujioka, Shinsuke; Kodama, R.

doi:10.1088/1361-6471/ac6272

Cited by 3 publications

(2 citation statements)

References 49 publications

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“…Except for fast neutron applications, a moderation system is crucial for extracting neutrons with appropriate energy, which are epithermal 14 , thermal 15 , and cold 16 . Radiography experiments and nuclear reaction observation have been performed using neutrons of various energies 3,[17][18][19][20][21] .…”

Section: Introductionmentioning

confidence: 99%

Demonstration of Shape Analysis of Neutron Resonance Transmission Spectrum Measured with a Laser-driven Neutron Source

Koizumi,

Ito,

Lee

et al. 2024

Preprint

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Laser-driven neutron sources (LDNSs) can generate strong short-pulse neutron beams, which are valuable for scientific studies and engineering applications. Neutron resonance transmission analysis (NRTA) is a nondestructive assay method for determining the areal density of each nuclide in a material sample using pulsed thermal and epithermal neutrons. An experiment demonstrating resonance-transition-spectrum measurement was conducted using an LDNS driven by the Laser for Fast Ignition Experiment at the Institute of Laser Engineering, Osaka University. A 6Li glass scintillation neutron detector with a gating circuit was placed 3.6 m from the LDNS. The output waveforms from the neutron detector were recorded and analyzed offline using the counting method. A resonance spectrum was extracted from only the data of three laser shots using a 115In and 109Ag plate sample. A simulated spectrum reproduced the experimental spectrum shapes. Shape analysis of the obtained spectrum was performed, and the fitting results reproduced the experimental parameters. These results indicate the applicability of an LDNS to NRTA for nondestructive material analysis.

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Section: Introductionmentioning

confidence: 99%

Demonstration of Shape Analysis of Neutron Resonance Transmission Spectrum Measured with a Laser-driven Neutron Source

Koizumi,

Ito,

Lee

et al. 2024

Preprint

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“…The activation method is one of the tools used to evaluate precisely the number of unstable isotopes. In our previous studies, the numbers of fast neutrons with energies of 8 20 MeV and thermal neutrons were quantitatively evaluated using activation methods [ 14 , 37 ] . Here, we demonstrated Cu production with an irradiation of laser-driven neutrons on a natural Zn metal target and measured the radioactivities of the unstable isotopes and isomer generated in the Zn target.…”

Section: Introductionmentioning

confidence: 99%

Feasibility study of laser-driven neutron sources for pharmaceutical applications

Mori

Yogo²,

Arikawa³

et al. 2023

High Pow Laser Sci Eng

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We predict the production yield of a medical radioisotope 67 Cu using 67 Zn(n, p) 67 Cu and 68 Zn(n, pn) 67 Cu reactions with fast neutrons provided from laser-driven neutron sources (LDNSs).The neutrons were generated by the p+ 9 Be and d+ 9 Be reactions with high energy ions accelerated by laser-plasma interaction. We evaluated the yield to be (3.3±0.5)×10 5 atoms for 67 Cu, corresponding to a radioactivity of 1.0±0.2 Bq, for a Zn foil sample with a single laser shot. Using a simulation with this result, we estimated 67 Cu production with a high-frequency laser. The result suggests that it is possible to generate 67 Cu with a radioactivity of 270 MBq using a future laser system with a frequency of 10 Hz and 10000-s radiation in a hospital.

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Non-invasive detection of hazardous materials with a thermal-to-epithermal neutron station: a feasibility study towards practical application

Silarski,

Dziedzic-Kocurek,

Drużbicki

et al. 2024

Sci Rep

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The growing scale of the devastation that even a single terrorist attack can cause requires more effective methods for the detection of hazardous materials. In particular, there are no solutions for effectively monitoring threats at sea, both for the off-shore infrastructure and ports. Currently, state-of-the-art detection methods determine the density distribution and the shapes of tested subjects but only allow for a limited degree of substance identification. This work aims to present a feasibility study of the possible usage of several methods available on the thermal-to-epithermal neutron station, VESUVIO, at the ISIS neutron and muon spallation source, UK, for the detection of hazardous materials. To this end, we present the results of a series of experiments performed concurrently employing neutron transmission and Compton scattering using melamine, a commonly used explosive surrogate, in order to determine its signal characteristics and limits of detection and quantitation. The experiments are supported by first-principles modelling, providing detailed scrutiny of the material structure and the nuclear dynamics behind the neutron scattering observables.

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Thermal neutron fluence measurement using a cadmium differential method at the laser-driven neutron source

Cited by 3 publications

References 49 publications

Demonstration of Shape Analysis of Neutron Resonance Transmission Spectrum Measured with a Laser-driven Neutron Source

Demonstration of Shape Analysis of Neutron Resonance Transmission Spectrum Measured with a Laser-driven Neutron Source

Feasibility study of laser-driven neutron sources for pharmaceutical applications

Non-invasive detection of hazardous materials with a thermal-to-epithermal neutron station: a feasibility study towards practical application

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