Neutron area monitor with passive detector

Valero-Luna, Claudia and Guzmán-García, Karen Arlete and Borja-Hernández, Candy Gretel and Hernández-Dávila, Víctor Manuel and Vega-Carrillo, Héctor René (2012). Neutron area monitor with passive detector. "Revista Mexicana de Física", v. 58 ; pp. 262-264. ISSN 0035-001X.

Description

Title: Neutron area monitor with passive detector
Author/s:
  • Valero-Luna, Claudia
  • Guzmán-García, Karen Arlete
  • Borja-Hernández, Candy Gretel
  • Hernández-Dávila, Víctor Manuel
  • Vega-Carrillo, Héctor René
Item Type: Article
Título de Revista/Publicación: Revista Mexicana de Física
Date: June 2012
Volume: 58
Subjects:
Freetext Keywords: Neutrons; Monte Carlo; activation detectors; Neutrones; Monte Carlo; detectores de activación
Faculty: E.T.S.I. Industriales (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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,γ) 198Au. The198Au 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 3”Ø×3” 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 1×10−9 to 20 MeV. Calculated fluence response was compared with the response of neutron monitor area LB 6411. = Se utilizó el método de Monte Carlo para calcular las respuestas de un monitor de neutrones pasivo. Para detectar los neutrones térmicos el monitor tiene una lámina de oro que se encuentra en el centro de un cilindro de polietileno. Los neutrones que inciden son moderados por los núcleos de polietileno que llega a la lámina de oro con la energía para inducir la activación a través de la 197Au reacción (n,γ)198 Au. El 197Au decae emitiendo rayos gamma de 0.411 MeV con una vida media de 2.7 días. La actividad inducida se destina a medir con un espectrómetro de rayos gamma con un detector de centelleo de 3”Ø×3” NaI (Tl) y la actividad de saturación se correlaciona con la dosis equivalente ambiental. La respuesta se calculó para 47 fuentes de neutrones monoenergéticos desde 1×10−9 a 20 MeV. La respuesta a la fluencia se comparó con la respuesta del monitor de área LB 6411.

More information

Item ID: 45497
DC Identifier: http://oa.upm.es/45497/
OAI Identifier: oai:oa.upm.es:45497
Official URL: http://rmf.smf.mx/
Deposited by: Memoria Investigacion
Deposited on: 26 Apr 2017 14:34
Last Modified: 26 Apr 2017 14:34
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