Portable fast-neutron radiography with the nuclear materials identification system for fissile material transfers

Hausladen, Paul; Bingham, Philip R.; Neal, J.S.; Mullens, J.A.; Mihalczo, J.T.

doi:10.1016/j.nimb.2007.04.206

Cited by 53 publications

(30 citation statements)

References 4 publications

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“…hydrogen gas or metal hydrides) and, therefore, potentially flammable, or they are highly radioactive thus providing the potential for large accumulations of the material to reach criticality. Neutrons are highly sensitive to hydrogen based compounds, thus neutron imaging will be able to efficiently identify their location and relative quantity [33]. Neutrons have also previously been utilized for criticality testing, for example by the nuclear materials identification system (NMIS) [34].…”

Section: Potential For Nuclear Waste Scanning Facilitymentioning

confidence: 99%

Evaluating laser-driven Bremsstrahlung radiation sources for imaging and analysis of nuclear waste packages

Jones

Brenner

Stitt

et al. 2016

Journal of Hazardous Materials

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A small scale sample nuclear waste package, consisting of a 28mm diameter uranium penny encased in grout, was imaged by absorption contrast radiography using a single pulse exposure from an x-ray source driven by a highpower laser. The Vulcan laser was used to deliver a focused pulse of photons to a tantalum foil, in order to generate a bright burst of highly penetrating x-rays (with energy >500keV), with a source size of <0.5mm. BAS-TR and BAS-SR image plates were used for image capture, alongside a newly developed Thalium doped Caesium Iodide scintillator-based detector coupled to CCD chips. The uranium penny was clearly resolved to sub-mm accuracy over a 30cm 2 scan area from a single shot acquisition. In addition, neutron generation was demonstrated in situ with the x-ray beam, with a single shot, thus demonstrating the potential for multi-modal criticality testing of waste materials. This feasibility study successfully demonstrated non-destructive radiography of encapsulated, high density, nuclear material. With recent developments of high-power laser systems, to 10Hz operation, a laser-driven multi-modal beamline for waste monitoring applications is envisioned.

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Section: Potential For Nuclear Waste Scanning Facilitymentioning

confidence: 99%

Evaluating laser-driven Bremsstrahlung radiation sources for imaging and analysis of nuclear waste packages

Jones

Brenner

Stitt

et al. 2016

Journal of Hazardous Materials

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show abstract

“…4 When first developed and fielded in the mid-to late-90s, the NMIS was used to verify weapons components or determine the quantity of fissile material inside a sealed container. 5,6 Although some measurements were conducted passively, 7 most used active interrogation to induce fissions in the fissile material. A 252 Cf spontaneous fission source mounted inside an ionization chamber allowed the processor to record the time of (time tag) each spontaneous fission.…”

Section: The Nuclear Materials Identification Systemmentioning

confidence: 99%

“…3 One common measurements made was the time correlation between the 252 Cf source and a detector on the opposite side of the object. 5 Because of their different speeds, gamma rays and neutrons of various energies arrive at the detectors at different times after the spontaneous fission. If the source-detector separation is known, a specific window of time lags between the source and detector can limit the measurement to either gamma rays or a certain energy range of fission neutrons.…”

Section: The Nuclear Materials Identification Systemmentioning

confidence: 99%

The Development of a Parameterized Scatter Removal Algorithm for Nuclear Materials Identification System Imaging

Grogan

2010

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“…These techniques could also include a subset of active radiography using an external radiation source. This source can be used to induce nuclear reactions in the material, generating a secondary radiation signature [10,11].…”

Section: The Utility Of Imagingmentioning

confidence: 99%

Imaging for dismantlement verification: information management and analysis algorithms

Seifert¹,

Miller²,

Myjak³

et al. 2010

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that no sensitive information be stored in the system. To overcome this problem, some features of the image might be reduced to a few parameters suitable for denition as an attribute. However, this process must be performed with care. Computing the perimeter, area, and intensity of an object, for example, might reveal sensitive information relating to shape, size, and material composition. This paper presents three analysis algorithms that reduce full image information to non-sensitive feature information. Ultimately, the algorithms are intended to provide only a yes/no response verifying the presence of features in the image. We evaluate the algorithms on both their technical performance in image analysis, and their application with and without an explicitly constructed information barrier. The underlying images can be highly detailed, since they are dynamically generated behind the information barrier. We consider the use of active (conventional) radiography alone and in tandem with passive (auto) radiography.

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Portable fast-neutron radiography with the nuclear materials identification system for fissile material transfers

Cited by 53 publications

References 4 publications

Evaluating laser-driven Bremsstrahlung radiation sources for imaging and analysis of nuclear waste packages

Evaluating laser-driven Bremsstrahlung radiation sources for imaging and analysis of nuclear waste packages

The Development of a Parameterized Scatter Removal Algorithm for Nuclear Materials Identification System Imaging

Imaging for dismantlement verification: information management and analysis algorithms

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