Development of Neutron Resonance Transmission Analysis as a Non-Destructive Assay Technique for Nuclear Nonproliferation&lt;sup&gt; &lt;/sup&gt;

Tsuchiya, H.; Kitatani, Fumito; Maeda, Makoto; Toh, Yosuke; Kureta, Masatoshi

doi:10.1585/pfr.13.2406004

Cited by 8 publications

(3 citation statements)

References 5 publications

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“…The areal densities of each nuclide are determined by analyzing the spectrum. High-resolving power in NRTA is achieved through a long flight path length, a short neutron pulse duration, or both 22,23,25 . LDNSs could suit the NRTA measurements because of their ability to generate short neutron pulses.…”

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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“…Recent work has sought to reduce the size of NRTA experimental setups by employing accelerator-based neutron sources; however, even these involve fairly large experimental facilities [14]. The prospect of using portable neutron generators and short beam lines has been raised [15] but no experimental results have yet been produced.…”

Section: Introductionmentioning

confidence: 99%

Neutron-Resonance Transmission Analysis with a Compact Deuterium-Tritium Neutron Generator

et al. 2021

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Neutron resonance transmission analysis (NRTA) is a spectroscopic technique that uses the resonant attenuation of epithermal neutrons to infer the isotopic composition of an object. NRTA is particularly well suited for applications requiring nondestructive analysis of objects containing mid-and high-Z elements. To date, NRTA has required large expensive accelerator facilities to achieve precise neutron beams and has not been suitable for on-site applications. In this study, we provide an experimental demonstration showing that NRTA can be performed using a compact low-cost deuterium-tritium (DT) neutron generator to analyze neutron resonances in the 1-50-eV range. The neutron transmission spectra for five single-element targets-silver, cadmium, tungsten, indium, and depleted uranium-each show uniquely identifiable resonant attenuation dips in measurement times on the order of tens of minutes. Closely spaced resonances of approximately 1-cm-thick multielement targets can be easily differentiated with 1-eV resolution up to neutron energies of 10 eV and 5-eV resolution up to neutron energies of 30 eV. These results demonstrate the viability of compact NRTA measurements for isotopic identification and have the potential to significantly broaden the applicability of the technique across materials science, engineering, and nuclear security.

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“…This circumstance has been a significant limitation to the broad applicability of an otherwise very powerful methodology. Recent work has been done with the goal of reducing size by employing accelerator-based neutron sources towards NRTA implementations [14][15][16], however even these involve fairly large experimental facilities.…”

Section: Introductionmentioning

confidence: 99%

Neutron Resonance Transmission Analysis with a Compact Deuterium-Tritium Neutron Generator

Klein,

Naqvi,

Bickus

et al. 2020

Preprint

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Neutron Resonance Transmission Analysis (NRTA) is a spectroscopic technique which uses the resonant absorption of neutrons in the epithermal range to infer the isotopic composition of an object. This spectroscopic technique has relevance in many traditional fields of science and nuclear security. NRTA in the past made use of large, expensive accelerator facilities to achieve precise neutron beams, significantly limiting its applicability. In this work we describe a series of NRTA experiments where we use a compact, low-cost deuterium-tritium (DT) neutron generator to produce short neutron beams (2.6 m) along with a 6 Li-glass neutron detector. The time-of-flight spectral data from five elements -silver, cadmium, tungsten, indium, and 238 U -clearly show the corresponding absorption lines in the 1-30 eV range. The experiments show the applicability of NRTA in this simplified configuration, and prove the feasibility of this compact and low-cost approach. This could significantly broaden the applicability of NRTA, and make it practical and applicable in many fields, such as material science, nuclear engineering, and arms control.

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Development of Neutron Resonance Transmission Analysis as a Non-Destructive Assay Technique for Nuclear Nonproliferation<sup> </sup>

Cited by 8 publications

References 5 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

Neutron-Resonance Transmission Analysis with a Compact Deuterium-Tritium Neutron Generator

Neutron Resonance Transmission Analysis with a Compact Deuterium-Tritium Neutron Generator

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