Optimization of the slow neutron detector array in the thermal neutron backscattering technique
Abstract: In Colombia, after decades of conflict, many geographical areas are believed to be contaminated by antipersonnel mines (MAP), Improvised Explosive Devices (IED) and other explosive ordnance. Mines laid by non-state armed groups are found around schools, houses and roads in rural areas. In...
- Autores:
-
Gómez Muñoz, Juansebastian
- Tipo de recurso:
- Fecha de publicación:
- 2017
- Institución:
- Universidad Nacional de Colombia
- Repositorio:
- Universidad Nacional de Colombia
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.unal.edu.co:unal/60851
- Acceso en línea:
- https://repositorio.unal.edu.co/handle/unal/60851
http://bdigital.unal.edu.co/59232/
- Palabra clave:
- 53 Física / Physics
Neutron backscattering technique
Explosive detection
Humanitarian demining
Soils
Dispersión de neutrones
Detección de explosivos
Desminado humanitario
Suelos
- Rights
- openAccess
- License
- Atribución-NoComercial 4.0 Internacional
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Universidad Nacional de Colombia |
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|
dc.title.spa.fl_str_mv |
Optimization of the slow neutron detector array in the thermal neutron backscattering technique |
title |
Optimization of the slow neutron detector array in the thermal neutron backscattering technique |
spellingShingle |
Optimization of the slow neutron detector array in the thermal neutron backscattering technique 53 Física / Physics Neutron backscattering technique Explosive detection Humanitarian demining Soils Dispersión de neutrones Detección de explosivos Desminado humanitario Suelos |
title_short |
Optimization of the slow neutron detector array in the thermal neutron backscattering technique |
title_full |
Optimization of the slow neutron detector array in the thermal neutron backscattering technique |
title_fullStr |
Optimization of the slow neutron detector array in the thermal neutron backscattering technique |
title_full_unstemmed |
Optimization of the slow neutron detector array in the thermal neutron backscattering technique |
title_sort |
Optimization of the slow neutron detector array in the thermal neutron backscattering technique |
dc.creator.fl_str_mv |
Gómez Muñoz, Juansebastian |
dc.contributor.author.spa.fl_str_mv |
Gómez Muñoz, Juansebastian |
dc.contributor.spa.fl_str_mv |
Cristancho Mejía, Fernando |
dc.subject.ddc.spa.fl_str_mv |
53 Física / Physics |
topic |
53 Física / Physics Neutron backscattering technique Explosive detection Humanitarian demining Soils Dispersión de neutrones Detección de explosivos Desminado humanitario Suelos |
dc.subject.proposal.spa.fl_str_mv |
Neutron backscattering technique Explosive detection Humanitarian demining Soils Dispersión de neutrones Detección de explosivos Desminado humanitario Suelos |
description |
Abstract: In Colombia, after decades of conflict, many geographical areas are believed to be contaminated by antipersonnel mines (MAP), Improvised Explosive Devices (IED) and other explosive ordnance. Mines laid by non-state armed groups are found around schools, houses and roads in rural areas. In some cases only the mined area is established however the exactly location of mines is unknown, this situation generates a latent threat to the civilian population. One of the nuclear techniques that are being investigated in different countries in the field of explosives detection and demining is the Thermal Neutron Backscattering Technique (TNBT). The TNBT is based on the fact that the buried target is Hydrogen-rich and therefore if it is in a media with different Hydrogen content and it is exposed to a fast neutron source, the number of backscattered thermal neutrons produced by the moderation process will give us a signal from which we can infer the presence of the Hydrogen-rich target. The TNBT has been used in controlled conditions to locate buried hydrogen-rich objects using a Cf-252 fast neutron source and two He-3 neutron detector arrays, also in different types of soil (sand and farming soil). The results of experiments are presented with the purpose of showing different possibilities of the detector arrays location, number of detectors per array, dependence with different soils and the best performance in the data analysis. |
publishDate |
2017 |
dc.date.issued.spa.fl_str_mv |
2017-11-15 |
dc.date.accessioned.spa.fl_str_mv |
2019-07-02T19:16:39Z |
dc.date.available.spa.fl_str_mv |
2019-07-02T19:16:39Z |
dc.type.spa.fl_str_mv |
Trabajo de grado - Maestría |
dc.type.driver.spa.fl_str_mv |
info:eu-repo/semantics/masterThesis |
dc.type.version.spa.fl_str_mv |
info:eu-repo/semantics/acceptedVersion |
dc.type.content.spa.fl_str_mv |
Text |
dc.type.redcol.spa.fl_str_mv |
http://purl.org/redcol/resource_type/TM |
status_str |
acceptedVersion |
dc.identifier.uri.none.fl_str_mv |
https://repositorio.unal.edu.co/handle/unal/60851 |
dc.identifier.eprints.spa.fl_str_mv |
http://bdigital.unal.edu.co/59232/ |
url |
https://repositorio.unal.edu.co/handle/unal/60851 http://bdigital.unal.edu.co/59232/ |
dc.language.iso.spa.fl_str_mv |
spa |
language |
spa |
dc.relation.ispartof.spa.fl_str_mv |
Universidad Nacional de Colombia Sede Bogotá Facultad de Ciencias Departamento de Física Departamento de Física |
dc.relation.references.spa.fl_str_mv |
Gómez Muñoz, Juansebastian (2017) Optimization of the slow neutron detector array in the thermal neutron backscattering technique. Maestría thesis, Universidad Nacional de Colombia - Sede Bogotá. |
dc.rights.spa.fl_str_mv |
Derechos reservados - Universidad Nacional de Colombia |
dc.rights.coar.fl_str_mv |
http://purl.org/coar/access_right/c_abf2 |
dc.rights.license.spa.fl_str_mv |
Atribución-NoComercial 4.0 Internacional |
dc.rights.uri.spa.fl_str_mv |
http://creativecommons.org/licenses/by-nc/4.0/ |
dc.rights.accessrights.spa.fl_str_mv |
info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Atribución-NoComercial 4.0 Internacional Derechos reservados - Universidad Nacional de Colombia http://creativecommons.org/licenses/by-nc/4.0/ http://purl.org/coar/access_right/c_abf2 |
eu_rights_str_mv |
openAccess |
dc.format.mimetype.spa.fl_str_mv |
application/pdf |
institution |
Universidad Nacional de Colombia |
bitstream.url.fl_str_mv |
https://repositorio.unal.edu.co/bitstream/unal/60851/1/1022325269.2017.pdf https://repositorio.unal.edu.co/bitstream/unal/60851/2/1022325269.2017.pdf.jpg |
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repository.name.fl_str_mv |
Repositorio Institucional Universidad Nacional de Colombia |
repository.mail.fl_str_mv |
repositorio_nal@unal.edu.co |
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1814089277744611328 |
spelling |
Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Cristancho Mejía, FernandoGómez Muñoz, Juansebastian5db1c5bb-b930-4cfd-b8c5-ccddef9c7bc83002019-07-02T19:16:39Z2019-07-02T19:16:39Z2017-11-15https://repositorio.unal.edu.co/handle/unal/60851http://bdigital.unal.edu.co/59232/Abstract: In Colombia, after decades of conflict, many geographical areas are believed to be contaminated by antipersonnel mines (MAP), Improvised Explosive Devices (IED) and other explosive ordnance. Mines laid by non-state armed groups are found around schools, houses and roads in rural areas. In some cases only the mined area is established however the exactly location of mines is unknown, this situation generates a latent threat to the civilian population. One of the nuclear techniques that are being investigated in different countries in the field of explosives detection and demining is the Thermal Neutron Backscattering Technique (TNBT). The TNBT is based on the fact that the buried target is Hydrogen-rich and therefore if it is in a media with different Hydrogen content and it is exposed to a fast neutron source, the number of backscattered thermal neutrons produced by the moderation process will give us a signal from which we can infer the presence of the Hydrogen-rich target. The TNBT has been used in controlled conditions to locate buried hydrogen-rich objects using a Cf-252 fast neutron source and two He-3 neutron detector arrays, also in different types of soil (sand and farming soil). The results of experiments are presented with the purpose of showing different possibilities of the detector arrays location, number of detectors per array, dependence with different soils and the best performance in the data analysis.Resumen: En Colombia, después de décadas de conflicto, se cree que muchas áreas geográficas están contaminadas por Minas Antipersonal (MAP), Municiones sin Explosionar (MUSE), Artefactos Explosivos Improvisados (AEI) y otros artefactos explosivos. Las minas colocadas por grupos armados se encuentran alrededor de las escuelas, las casas y caminos en zonas rurales. En algunos casos sólo se establece la zona minada pero la ubicación exacta de las minas es desconocida, esta situación genera un peligro latente para la población civil. Una de las técnicas que usa las radiaciones nucleares y que está siendo investigada en diferentes países en el campo de la detección de explosivos y desminado es la denominada retrodispersión de neutrones térmicos (TNBT, por sus siglas en inglés). La TNBT se basa en el hecho de que el objeto enterrado es rico en hidrógeno y por lo tanto si se encuentra en un medio con diferentes contenidos de hidrógeno y se expone a una fuente de neutrones rápidos, el número de neutrones térmicos retrodispersados producidos por el proceso de moderación nos dará una señal de la que podemos inferir la presencia del objeto rico en hidrógeno. La TNBT se ha utilizado en condiciones controladas para localizar objetos ricos en hidrógeno enterrados, utilizando una fuente de neutrones rápidos y dos arreglos de detectores de neutrones de He-3, también en diferentes tipos de suelo (arena y suelo franco o tierra de cultivo) y diferentes contenidos de agua del suelo. Los resultados de los experimentos son presentados con el propósito de mostrar las diferentes posibilidades de la ubicación de los detectores, el número de detectores por conjunto, la dependencia con diferentes suelos y el mejor rendimiento en el análisis de datos.Maestríaapplication/pdfspaUniversidad Nacional de Colombia Sede Bogotá Facultad de Ciencias Departamento de FísicaDepartamento de FísicaGómez Muñoz, Juansebastian (2017) Optimization of the slow neutron detector array in the thermal neutron backscattering technique. Maestría thesis, Universidad Nacional de Colombia - Sede Bogotá.53 Física / PhysicsNeutron backscattering techniqueExplosive detectionHumanitarian deminingSoilsDispersión de neutronesDetección de explosivosDesminado humanitarioSuelosOptimization of the slow neutron detector array in the thermal neutron backscattering techniqueTrabajo de grado - Maestríainfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/acceptedVersionTexthttp://purl.org/redcol/resource_type/TMORIGINAL1022325269.2017.pdfapplication/pdf10704740https://repositorio.unal.edu.co/bitstream/unal/60851/1/1022325269.2017.pdf7672ec6d5442d8581613310d5cb2ba79MD51THUMBNAIL1022325269.2017.pdf.jpg1022325269.2017.pdf.jpgGenerated Thumbnailimage/jpeg4438https://repositorio.unal.edu.co/bitstream/unal/60851/2/1022325269.2017.pdf.jpg2e51c848a439144271d3797b16b6117aMD52unal/60851oai:repositorio.unal.edu.co:unal/608512023-04-09 23:05:03.001Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co |