Modeling of a neutron irradiator using Monte Carlo

Raphael F G Santos; Wilson F Rebello; Julio J S Estrada; Marcos P C Medeiros; Ademir X Silva; Edmilson M Souza; Rogério F Costa; Caroline M Barbosa; Kelmo L Braga; Delson Braz

doi:10.1016/j.apradiso.2020.109332

Modeling of a neutron irradiator using Monte Carlo

Appl Radiat Isot. 2020 Nov:165:109332. doi: 10.1016/j.apradiso.2020.109332. Epub 2020 Jul 22.

Authors

Affiliations

¹ Nuclear Engineering Graduate Program, Military Institute of Engineering (IME), Praça General Tibúrcio, 80, 22290-270, Rio de Janeiro, Brazil; Nuclear Engineering Graduate Program, Federal University of Rio de Janeiro (COPPE/UFRJ), Av. Horácio Macedo, 2030, Bloco G - Sala 206 - CT, Fundão, 21941-914, Rio de Janeiro, Brazil. Electronic address: rsantos@con.ufrj.br.
² Rio de Janeiro State University, Faculty of Engineering and IBRAG, Rua São Francisco Xavier, 524, Maracanã, 20550-900, Rio de Janeiro, Brazil. Electronic address: wilsonrebello@gmail.com.
³ Nuclear Engineering Graduate Program, Military Institute of Engineering (IME), Praça General Tibúrcio, 80, 22290-270, Rio de Janeiro, Brazil. Electronic address: 51jestrada@gmail.com.
⁴ Nuclear Engineering Graduate Program, Military Institute of Engineering (IME), Praça General Tibúrcio, 80, 22290-270, Rio de Janeiro, Brazil. Electronic address: eng.cavaliere@gmail.com.
⁵ Nuclear Engineering Graduate Program, Federal University of Rio de Janeiro (COPPE/UFRJ), Av. Horácio Macedo, 2030, Bloco G - Sala 206 - CT, Fundão, 21941-914, Rio de Janeiro, Brazil. Electronic address: ademir@con.ufrj.br.
⁶ Rio de Janeiro State University of the West Zone (UEZO), Rua Manoel Caldeira de Alvarenga,1203, Benjamin do Monte, Campo Grande, 23070-200, Rio de Janeiro, Brazil. Electronic address: edmilsonsouza@uezo.rj.gov.br.
⁷ Nuclear Engineering Graduate Program, Federal University of Rio de Janeiro (COPPE/UFRJ), Av. Horácio Macedo, 2030, Bloco G - Sala 206 - CT, Fundão, 21941-914, Rio de Janeiro, Brazil. Electronic address: rogercosta1@hotmail.com.
⁸ Nuclear Engineering Graduate Program, Federal University of Rio de Janeiro (COPPE/UFRJ), Av. Horácio Macedo, 2030, Bloco G - Sala 206 - CT, Fundão, 21941-914, Rio de Janeiro, Brazil. Electronic address: carolmattosb@yahoo.com.br.
⁹ Nuclear Engineering Graduate Program, Federal University of Rio de Janeiro (COPPE/UFRJ), Av. Horácio Macedo, 2030, Bloco G - Sala 206 - CT, Fundão, 21941-914, Rio de Janeiro, Brazil. Electronic address: kelmo.lins@gmail.com.
¹⁰ Nuclear Engineering Graduate Program, Federal University of Rio de Janeiro (COPPE/UFRJ), Av. Horácio Macedo, 2030, Bloco G - Sala 206 - CT, Fundão, 21941-914, Rio de Janeiro, Brazil. Electronic address: delson@nuclear.ufrj.br.

PMID: 32739795
DOI: 10.1016/j.apradiso.2020.109332

Abstract

The Nuclear Engineering Department of the Military Institute of Engineering (SE/7-IME) is designing and simulation a neutron irradiator with 1 Ci of ²⁴¹Am-⁹Be source. The objective of this irradiator is to generate a flux of neutrons to be used in research and teaching maintaining, for purposes of radiological protection, the rate of ambient dose equivalent, H*(10), below 10 μSv/h at 30 cm from the surface. This paper presents the proposed irradiator, values of H*(10) at different distances from the irradiator and the neutron flux in different points of the beam irradiation, all calculated using the MCNPX code.

Keywords: Ambient dose equivalent; MCNPX code; Neutron irradiator.