Fast neutron inspection of sea containers for the presence of 'dirty bomb'
| Autor: | G. Nebbia, Jasmina Obhođaš, S. Pesente, Sasha Blagus, B. Vekić, Karlo Nađ, Davorin Sudac, V. Valkovic |
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| Rok vydání: | 2007 |
| Předmět: |
Physics
Nuclear and High Energy Physics Fissile material Explosive material Astrophysics::High Energy Astrophysical Phenomena Nuclear engineering Dirty bomb Alpha particle Neutron radiation Nuclear physics dirty bomb fast neutron inspection time-of-flight measurement Depleted uranium Neutron Irradiation Instrumentation |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 263:119-122 |
| ISSN: | 0168-583X |
| Popis: | The possibility of the detection of “dirty bomb” presence inside sea containers is evaluated. The method proposed for explosive and fissile material detection makes use of two sensors (X-rays and neutrons). A commercial imaging device based on the X-ray radiography performs a fast scan of the container, identifies a “suspect” region and provides its coordinates to the neutron based device for the final “confirmatory” inspection. In this two sensor system a 14 MeV neutron beam defined by the detection of associated alpha particles is used for interrogation of only volume elements marked by X-ray sensor. The object’s nature is determined from passive and neutron induced, gamma energy spectra measurements. Experimental results (time-of-flight and gamma energy spectra) obtained for the irradiation 30 kg of TNT, depleted uranium and other materials hidden inside the container are presented. |
| Databáze: | OpenAIRE |
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