Neutron area monitor with passive detector
Using Monte Carlo methods the responses of a passive neutron monitor area has been calculated. To detect thermal neutrons the monitor has a gold foil that is located at the center of a polyethylene cylinder. Impinging neutrons are moderated by polyethylene nuclei reaching the gold foil with the ener...
| Autores: | , , , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2012 |
| País: | México |
| Recursos: | Universidad Autónoma de Zacatecas |
| Repositorio: | Redalyc-UAZ |
| OAI Identifier: | oai:redalyc.org:57023406017 |
| Acesso em linha: | https://www.redalyc.org/articulo.oa?id=57023406017 |
| Access Level: | acceso abierto |
| Palavra-chave: | Física, Astronomía y Matemáticas Neutrons Monte Carlo activation detectors |
| Resumo: | Using Monte Carlo methods the responses of a passive neutron monitor area has been calculated. To detect thermal neutrons the monitor has a gold foil that is located at the center of a polyethylene cylinder. Impinging neutrons are moderated by polyethylene nuclei reaching the gold foil with the energy to induce activation through the reaction 197Au(n, x) 198Au. The 198Au decays emitting 0.411 MeV gamma rays with a half life of 2.7 days. The induced activity is intended to be measured with a gamma-ray spectrometer with a 3Q x x 3x NaI(Tl) scintillator and the saturation activity is correlated to the ambient dose equivalent. The response was calculated for 47 monoenergetic neutron sources ranging from 1x10-9 to 20 MeV. Calculated fluence response was compared with the response of neutron monitor area LB 6411. |
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