Investigación del efecto de la distancia entre detectores en la técnica de retrodispersión de neutrones térmicos
Nuclear techniques are being used to detect or locate Improvised Explosive Devices (IED). One of these techniques is the Thermal Neutron Backscattering in which fast neutrons from an isotopic source impinge on a chosen volume of soil where the IED is suspected to be found. The low Z nuclei of the IE...
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| Tipo de recurso: | tesis de maestría |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2019 |
| País: | Colombia |
| Institución: | Universidad Nacional de Colombia |
| Repositorio: | Repositorio UN |
| Idioma: | español |
| OAI Identifier: | oai:repositorio.unal.edu.co:unal/76009 |
| Acceso en línea: | https://repositorio.unal.edu.co/handle/unal/76009 |
| Access Level: | acceso abierto |
| Palabra clave: | 530 - Física RNT Detección de explosivos AEI Desminado Thermal neutrons Explosives detection IED Deminig |
| Sumario: | Nuclear techniques are being used to detect or locate Improvised Explosive Devices (IED). One of these techniques is the Thermal Neutron Backscattering in which fast neutrons from an isotopic source impinge on a chosen volume of soil where the IED is suspected to be found. The low Z nuclei of the IED thermalize the neutrons more effectively than the average surronding soil and because of this fact, when a scan over the surface of the soil is carried out, a higher intensity of backscattered neutrons will indicate the horizontal location of the explosive. We use a 252 Cf source placed in the middle between two detectors of slow neutron detectors. We have studied the ability of location as a function of a number of parameters that decide the intensity of the signal like number of detectors on each array, distance between the arrays, humidity and type of soil and depth at which the IED is planted. Because in practical situations it is important to minimize size, weight and total power consumption of a portable locating device, the case of only one detector per array placed at the three shortest posible distance between them is of high importance. |
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