Proposal for a radiation shielding study aiming the implantation of neutrons beam shutter in the J-9 radiation channel of the Argonauta reactor of the Nuclear Engineering Institute. Brazilian Journal of Radiation Sciences, Rio de Janeiro, Brazil, v. 7, n. 2A (Suppl.), 2019. DOI: 10.15392/bjrs.v7i2A.594. Disponível em: https://www.bjrs.org.br/revista/index.php/REVISTA/article/view/594. Acesso em: 1 may. 2025.