使用蒙特卡洛代码PHITS和MCNPX的6LiI邦纳球谱仪的响应
Rafael Santos Oliveira1, Juliana Batista da Silva1, Lucas Moacir Machado Mendes1
1Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, Brazil.
概括
波纳球谱仪的响应函数是使用PHITS和MCNPX蒙特卡洛代码计算的. 比较结果突出了不同核数据和物理模型对中子检测的影响.
科学领域:
- 核物理与仪器仪表技术
- 辐射检测和测量 辐射检测和测量
背景情况:
- 对中子探测系统的准确表征对于辐射安全和研究至关重要.
- 波纳球谱仪 (BSS) 广泛用于中子光谱展开.
- BSS响应函数 (RF) 的准确性取决于模拟代码和核数据.
研究的目的:
- 为了计算波纳球谱仪 (BSS) 的响应函数 (RF),使用6LiI热中子探测器.
- 用PHITS和MCNPX代码计算的RF与现有公布数据进行比较.
- 分析不同核数据库和物理模型对计算的射频的影响.
主要方法:
- 蒙特卡洛模拟使用PHITS (3.26版本) 和MCNPX (2.7.0版本) 进行.
- 计算使用了每个代码中的默认核数据库和物理模型.
- 响应函数与使用MCNP6.1.1.获得的先前发布的数据进行了比较.
主要成果:
- 使用PHITS和MCNPX计算的响应函数显示变化.
- 与已公布的MCNP6.1数据相比,观察到差异.
- 该研究量化了特定代码的核数据和物理模型对BSS射频的影响.
结论:
- 选择蒙特卡洛代码,核数据库和物理模型显著影响波纳球谱仪响应函数.
- 了解这些影响对于准确的中子剂量测量和光谱测量至关重要.
- 对特定的核数据和模型效应进行进一步的调查是有必要的,以改进BSS模拟.
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