Physical description of nuclear materials identification system (NMIS) signatures

Mihalczo, J.T.; Mullens, J.A.; Mattingly, John; Valentine, T.E.

doi:10.1016/s0168-9002(00)00304-1

Cited by 69 publications

(50 citation statements)

References 22 publications

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“…This paper demonstrates applications of the following four measurement methods that are useful in material identification with NMIS-type measurements. DT transmission, DT scattering, and californium transmission have been demonstrated in previous papers (Grogan et al, 2008;Mihalczo et al, 2000). Active gamma spectroscopy has been proposed for NMIS and has been used for explosive (Hurley and Tinsley, 2007).…”

Section: Introductionmentioning

confidence: 72%

Active Neutron Interrogation of Non-Radiological Materials with NMIS

Walker¹,

Mihalczo²

2012

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Section: Introductionmentioning

confidence: 72%

Active Neutron Interrogation of Non-Radiological Materials with NMIS

Walker¹,

Mihalczo²

2012

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“…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]. In this method, a time resolved analysis is achieved; neutrons that pass through active material induces fission, generating additional particles that are detected later than directly transmitted neutrons.…”

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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“…The time dependence of fission chain multiplication processes has been measured by a variety of methods. 2,3 The number of delayed neutrons and gamma rays is proportional to the number of prompt neutrons. The ratio of delayed neutron emissions to prompt emissions is fixed and does not depend on the multiplication, although the total number does.…”

Section: Neutrons and Gamma Rays From Fissionmentioning

confidence: 99%

Radiation Detection from Fission

Mihalczo¹

2004

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Physical description of nuclear materials identification system (NMIS) signatures

Cited by 69 publications

References 22 publications

Active Neutron Interrogation of Non-Radiological Materials with NMIS

Active Neutron Interrogation of Non-Radiological Materials with NMIS

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

Radiation Detection from Fission

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