Abstract Neutron exposure Accelerator System for Biological Effect Experiments (NASBEE) at National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology (NIRS-QST) achieved thermal neutron flux of a therapeutic intensity of (1.75 ± 0.13) × 109 cm−2 s−1 by optimizing polyethylene (PE) moderator in the beam port. The dose contamination of gamma rays was 2.37 × 10−12 Gy cm2 (the absorbed dose of 14.9 Gy h−1). The improved thermal neutron field at the NASBEE facility will be useful in the research and development for boron neutron capture therapy (BNCT).

中文翻译：

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为增加基于 NASBEE 加速器的中子场中的热中子通量而优化的聚乙烯慢化剂

摘要 国立放射科学研究所、国立量子与放射科学与技术研究所（NIRS-QST）的生物效应实验中子暴露加速器系统（NASBEE）实现了治疗强度（1.75±0.13）×109 cm的热中子通量-2 s-1 通过优化光束端口中的聚乙烯 (PE) 慢化剂。γ 射线的剂量污染为 2.37 × 10-12 Gy cm2（吸收剂量为 14.9 Gy h-1）。NASBEE 设施中改进的热中子场将有助于硼中子俘获疗法 (BNCT) 的研究和开发。