Development of a High-brightness, Quasi-monoenergetic Neutron Source for Neutron Imaging

Johnson, M. S.; Anderson, S. G.; Bleuel, D. L.; Fitsos, P; Gibson, D. J.; Hall, James M.; Marsh, Roark; Rusnak, B.; Sain, John D.

doi:10.1016/j.phpro.2017.09.018

Cited by 6 publications

(3 citation statements)

References 11 publications

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“…Some of our feasibility measurements have been published by a number of us [11][12][13][14][15][16]. We report on one of our feasibility measurements that was performed with 10-MeV quasimonoenergetic neutrons using the tandem Van De Graaf accelerator at the Edwards Accelerator Lab at Ohio University.…”

Section: Feasibility Measurementsmentioning

confidence: 99%

Construction of a Quasi-Monoenergetic Neutron Source for Fast-Neutron Imaging

Johnson

2020

Neutron Radiography - WCNR-11

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This paper presents and discusses an approach to fast-neutron imaging that will provide high-resolution detection (i.e. ≤ 1 mm) of small features such as inclusions, voids, and variations in density. The application for fast-neutron imaging centers around assessing low-Z materials in high-Z shielded configurations. For this paper we present a simple theoretical argument on the feasibility of fast-neutron imaging and present results from some of our feasibility measurements. Finally, we discuss the requirements and objectives for the fastneutron imaging system currently under construction at Lawrence Livermore National Laboratory (LLNL).

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Section: Feasibility Measurementsmentioning

confidence: 99%

Construction of a Quasi-Monoenergetic Neutron Source for Fast-Neutron Imaging

Johnson

2020

Neutron Radiography - WCNR-11

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“…Using the nuclear data, we embarked on a campaign to test the feasibility of fast-neutron imaging with quasimonoenergetic neutrons, see [13][14][15][16][17][18]. Our measurements were performed at the Ohio University Accelerator Laboratory using the d+D reaction in a 3-atm-a, 8-cm D2 gas cell, with a 5-µm tungsten window.…”

Section: Measurementsmentioning

confidence: 99%

“…The quantity, 𝜷 𝒌 , is the CG update parameter. For the analysis in this paper, the Polak-Ribéire parameter [18] was used,…”

Section: Figure 6: Plastic Rod Insert (Upper) and Tungsten Sleeve (Mi...mentioning

confidence: 99%

Computed tomography with fast-neutron sources

Johnson¹,

Anderson²,

Bleuel³

et al. 2020

eJNDT

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Lawrence Livermore National Laboratory (LLNL) is near-completion of a quasi-monoenergetic neutron source for fastneutron imaging and computed tomography (CT). The source is expected to produce 10-MeV neutrons with an on-axis flux of ~1011 per second per steradian through a collimated aperture with a ~7-degree opening angle. The application for this source is imaging and CT of low-Z materials heavily shielded by high-Z materials. Fast-neutron imaging and CT is a non-destructive technique for very thick objects. We have radiographed a variety of objects using various sources of fast neutrons. We will discuss our CT reconstruction methods and results from these measurements. We will also discuss our results as they relate to our expectations of the near-complete neutron source at LLNL.

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Fast Neutron Imaging Techniques

Bishnoi

2022

Neutron Imaging

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Development of a High-brightness, Quasi-monoenergetic Neutron Source for Neutron Imaging

Cited by 6 publications

References 11 publications

Construction of a Quasi-Monoenergetic Neutron Source for Fast-Neutron Imaging

Construction of a Quasi-Monoenergetic Neutron Source for Fast-Neutron Imaging

Computed tomography with fast-neutron sources

Fast Neutron Imaging Techniques

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