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Nuclear-Reaction-Based Radiation Source For Explosives-And SNM-Detection In Massive Cargo
An automatic, nuclear-reaction-based, few-view transmission radiography method and system concept is presented, that will simultaneously detect small, operationally-relevant quantities of chemical explosives and special nuclear materials (SNM) in objects up to the size of LD-3 aviation containers. D...
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Published in: | AIP conference proceedings 2011-01, Vol.1336 (1) |
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Main Authors: | , , , , , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Online Access: | Get full text |
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Summary: | An automatic, nuclear-reaction-based, few-view transmission radiography method and system concept is presented, that will simultaneously detect small, operationally-relevant quantities of chemical explosives and special nuclear materials (SNM) in objects up to the size of LD-3 aviation containers. Detection of all threat materials is performed via the {sup 11}B(d,n+{gamma}) reaction on thick, isotopically-enriched targets; SNM are primarily detected via Dual Discrete-Energy Radiography (DDER), using 15.11 MeV and 4.43 MeV {sup 12}C{gamma}-rays, whereas explosives are primarily detected via Fast Neutron Resonance Radiography (FNRR), employing the broad-energy neutron spectra produced in a thick {sup 11}B-target. To achieve a reasonable throughput of {approx}20 containers per hour, ns-pulsed deuteron beam of the order of 0.5 mA intensity at energies of 5-7 MeV is required. As a first step towards optimizing parameters and sensitivities of an operational system, the 0 deg. spectra and yields of both {gamma}-rays and neutrons in this reaction have been measured up to E{sub d} = 6.65 MeV. |
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ISSN: | 0094-243X 1551-7616 |
DOI: | 10.1063/1.3586195 |