Study by Monte Carlo methods of an explosives detection system made up with a D-D neutron generator and NaI(Tl) gamma detectors

Cevallos Robalino, Lenin Estuardo and García Fernández, Gonzalo and Gallego Díaz, Eduardo F. and Guzmán-García, Karen Arlete and Vega-Carrillo, Héctor René (2018). Study by Monte Carlo methods of an explosives detection system made up with a D-D neutron generator and NaI(Tl) gamma detectors. "Applied Radiation and Isotopes", v. 141 ; pp. 167-175. ISSN 0969-8043. https://doi.org/10.1016/j.apradiso.2018.02.018.

Description

Title: Study by Monte Carlo methods of an explosives detection system made up with a D-D neutron generator and NaI(Tl) gamma detectors
Author/s:
  • Cevallos Robalino, Lenin Estuardo
  • García Fernández, Gonzalo
  • Gallego Díaz, Eduardo F.
  • Guzmán-García, Karen Arlete
  • Vega-Carrillo, Héctor René
Item Type: Article
Título de Revista/Publicación: Applied Radiation and Isotopes
Date: November 2018
ISSN: 0969-8043
Volume: 141
Subjects:
Freetext Keywords: Explosives detection; MCNP6; RDX; Ammonium nitrate; Neutron generator; Deuterium-deuterium reaction
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Energética
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Detection of hidden explosives is of utmost importance for homeland security. Several configurations of an Explosives Detection System (EDS) to intercept hidden threats, made up with a Deuterium-Deuterium (D-D) compact neutron generator and NaI (Tl) scintillation detectors, have been evaluated using MCNP6 code. The system's response to various samples of explosives, such as RDX and Ammonium Nitrate, is analysed. The D-D generator is able to produce fast neutrons with 2.5 MeV energy in a maximum yield of 1010 n/s. It is surrounded by high-density polyethylene to thermalize the fast neutrons and to optimize interactions with the sample inspected, whose emission of gamma rays gives a characteristic spectrum of the elements that constitute it. This procedure allows to determine its chemical composition and to identify the type of substance. The necessary shielding is evaluated to estimate its thicknesses depending on the admissible dose of operation, using lead and polyethylene. The results show that its functionality is promising in the field of national security for explosives inspection.

Funding Projects

TypeCodeAcronymLeaderTitle
Universidad Politécnica de MadridSN170541001UnspecifiedCSN - Consejo de Seguridad NuclearCátedra de Seguridad Nuclear "Federico Goded" en la ETSI Industriales

More information

Item ID: 55143
DC Identifier: http://oa.upm.es/55143/
OAI Identifier: oai:oa.upm.es:55143
DOI: 10.1016/j.apradiso.2018.02.018
Official URL: https://www.sciencedirect.com/science/article/pii/S0969804317313829?via%3Dihub
Deposited by: Memoria Investigacion
Deposited on: 22 May 2019 17:21
Last Modified: 23 May 2019 13:40
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