Monte Carlo simulation-aided design of a thermal neutron generator system from 241Am-Be isotopic sources
Collimated thermal neutron beams are obtained from neutron extraction channels in nuclear reactors for various applications in research and technology, such as neutron imaging techniques (neutron radiography, neutron radioscopy, neutron tomography, and neutron-based autoradiography). Practical setu...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Brazilian Radiation Protection Society (Sociedade Brasileira de Proteção Radiológica, SBPR)
2023-07-01
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| Series: | Brazilian Journal of Radiation Sciences |
| Subjects: | |
| Online Access: | https://bjrs.org.br/revista/index.php/REVISTA/article/view/2118 |
| _version_ | 1797770982719488000 |
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| author | Antônio Cezar Orozco Claudio Antonio Federico Odair Lelis Gonçalez |
| author_facet | Antônio Cezar Orozco Claudio Antonio Federico Odair Lelis Gonçalez |
| author_sort | Antônio Cezar Orozco |
| collection | DOAJ |
| description |
Collimated thermal neutron beams are obtained from neutron extraction channels in nuclear reactors for various applications in research and technology, such as neutron imaging techniques (neutron radiography, neutron radioscopy, neutron tomography, and neutron-based autoradiography). Practical setups for neutron radiography using ion beams from particle accelerators and radioisotopic sources of fast neutrons have been also developed. However, only radioisotopic sources enable autonomous and transportable thermalization systems that can produce thermal neutron collimated beams. This work presents the performance results for a prototype of a compact system that generates a collimated beam of thermal neutrons using low-activity isotopic 241Am-Be sources. It was designed with the aid of Monte Carlo simulation using the PHITS v 3.17 program. Experimental measurements of the fluence of the neutron beam produced by the built prototype showed good agreement with the simulated values by the Monte Carlo method.
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| first_indexed | 2024-03-12T21:30:55Z |
| format | Article |
| id | doaj.art-c1268b4d4a334444b63cd3aea349085f |
| institution | Directory Open Access Journal |
| issn | 2319-0612 |
| language | English |
| last_indexed | 2024-03-12T21:30:55Z |
| publishDate | 2023-07-01 |
| publisher | Brazilian Radiation Protection Society (Sociedade Brasileira de Proteção Radiológica, SBPR) |
| record_format | Article |
| series | Brazilian Journal of Radiation Sciences |
| spelling | doaj.art-c1268b4d4a334444b63cd3aea349085f2023-07-27T21:33:17ZengBrazilian Radiation Protection Society (Sociedade Brasileira de Proteção Radiológica, SBPR)Brazilian Journal of Radiation Sciences2319-06122023-07-01111A (Suppl.)10.15392/2319-0612.2023.2118Monte Carlo simulation-aided design of a thermal neutron generator system from 241Am-Be isotopic sourcesAntônio Cezar Orozco0Claudio Antonio Federico1Odair Lelis Gonçalez2Instituto de Aeronáutica e EspaçoInstituto de Estudos AvançadosInstituto de Estudos Avançados Collimated thermal neutron beams are obtained from neutron extraction channels in nuclear reactors for various applications in research and technology, such as neutron imaging techniques (neutron radiography, neutron radioscopy, neutron tomography, and neutron-based autoradiography). Practical setups for neutron radiography using ion beams from particle accelerators and radioisotopic sources of fast neutrons have been also developed. However, only radioisotopic sources enable autonomous and transportable thermalization systems that can produce thermal neutron collimated beams. This work presents the performance results for a prototype of a compact system that generates a collimated beam of thermal neutrons using low-activity isotopic 241Am-Be sources. It was designed with the aid of Monte Carlo simulation using the PHITS v 3.17 program. Experimental measurements of the fluence of the neutron beam produced by the built prototype showed good agreement with the simulated values by the Monte Carlo method. https://bjrs.org.br/revista/index.php/REVISTA/article/view/2118neutrongraphythermal neutronsMonte CarlosimulationPHITS |
| spellingShingle | Antônio Cezar Orozco Claudio Antonio Federico Odair Lelis Gonçalez Monte Carlo simulation-aided design of a thermal neutron generator system from 241Am-Be isotopic sources Brazilian Journal of Radiation Sciences neutrongraphy thermal neutrons Monte Carlo simulation PHITS |
| title | Monte Carlo simulation-aided design of a thermal neutron generator system from 241Am-Be isotopic sources |
| title_full | Monte Carlo simulation-aided design of a thermal neutron generator system from 241Am-Be isotopic sources |
| title_fullStr | Monte Carlo simulation-aided design of a thermal neutron generator system from 241Am-Be isotopic sources |
| title_full_unstemmed | Monte Carlo simulation-aided design of a thermal neutron generator system from 241Am-Be isotopic sources |
| title_short | Monte Carlo simulation-aided design of a thermal neutron generator system from 241Am-Be isotopic sources |
| title_sort | monte carlo simulation aided design of a thermal neutron generator system from 241am be isotopic sources |
| topic | neutrongraphy thermal neutrons Monte Carlo simulation PHITS |
| url | https://bjrs.org.br/revista/index.php/REVISTA/article/view/2118 |
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