A simulation study on beam property of 124Sb–Be isotope-based neutron for BNCT
| Autor: | Gerard Bengua, Satoru Endo, Tsuyoshi Kajimoto, Yoshinori Sakurai, Kenichi Tanaka |
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| Rok vydání: | 2020 |
| Předmět: |
Radiation
Materials science Photon Isotope Gamma ray Reflector (antenna) 010403 inorganic & nuclear chemistry 01 natural sciences 030218 nuclear medicine & medical imaging 0104 chemical sciences Nuclear physics 03 medical and health sciences 0302 clinical medicine Shield Neutron source Neutron Beam (structure) |
| Zdroj: | Applied Radiation and Isotopes. 164:109227 |
| ISSN: | 0969-8043 |
| Popis: | The 9Be(γ,n) neutrons with the energies at 21–24 keV generated by 1.691 MeV photons from 124Sb was investigated as a source of epithermal neutrons for BNCT, using PHITS code. A beam shaping assembly composed of 13 mm thick Be target, a gamma ray shield made of 30 cm thick Bi, and a reflector of 30 cm thick Pb satisfied the beam requirements of IAEA-TECDOC-1223. The needed 124Sb activity was estimated in the order of 1016–1017 Bq. Feasibility of BNCT using 124Sb–Be neutrons would be influenced by the capability of periodic supply of short-lived 124Sb (half-life: 60 days) with such high activity. |
| Databáze: | OpenAIRE |
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