Detection of alpha and 7 Li particles from 10 B(n, α) 7 Li reactions using a combination of CR-39 nuclear track detector and potassium hydroxide-ethanol-water solution in accelerator-based neutron fields
作者: Ryo OgawaraTamon KusumotoTeruaki KonishiTsuyoshi HamanoSatoshi Kodaira
作者单位: 1National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
2Advanced Research Center for Beam Science, Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
3RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
4Center for Advanced Radiation Emergency Medicine, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
5Institute for Quantum Life Science, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
刊名: Nuclear Inst. and Methods in Physics Research, B, 2020, Vol.467 , pp.9-12
来源数据库: Elsevier Journal
DOI: 10.1016/j.nimb.2020.01.030
关键词: Boron neutron capture therapyCR-39 nuclear track detectorPotassium hydroxide-ethanol water solutionAccelerator-based neutron field
原始语种摘要: Abstract(#br)We investigated the optimum etching condition for potassium hydroxide-ethanol–water solution (PEW) to detect only alpha and 7 Li particles from 10 B(n, α) 7 Li reactions registered in a CR-39 plastic nuclear track detector. The background recoil protons, which are induced by fast neutrons with energies of <2 MeV produced by 9 Be(p, n) 9 B reactions in accelerator-based neutron sources, were discriminated by the desensitization effect with PEW. We found that an ethanol concentration of ≥15 wt% in a PEW solution discriminated recoil proton tracks with energies of <2 MeV. The optimized conditions will be applicable for evaluating dose distribution in tissue in accelerator-based boron neutron capture therapy.
全文获取路径: Elsevier  (合作)
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