对铁和的快速中子诱导反应的激发功能
1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.
概括
这项研究测量了铁和同位素的中子诱导反应截面. 理论计算显示了与实验数据的显著差异,特别是对于54Fe{n,α) 51Cr反应.
科学领域:
- 核物理 核物理 核物理
- 核反应的核反应
- 中子截面测量 中子截面测量
背景情况:
- 准确的核数据对于核能,医学和安全领域的应用至关重要.
- 对铁 (Fe) 和 (Pb) 同位素的中子诱导反应对于理解核过程很重要.
研究的目的:
- 实验性地确定对54Fe,56Fe和204Pb的特定中子诱导反应的截面.
- 将实验结果与使用TALYS和EMPIRE代码的理论计算进行比较.
- 评估各种核数据库的准确性.
主要方法:
- 激活方法和马射线光谱学用于实验测量.
- 使用TALYS-1.96和EMPIRE-3.2.3.3进行了理论计算.
- 实验数据与来自CENDL-3.2,ENDF/B-VIII.0,JENDL-5,BROND-3.1和JEFF-3.3图书馆的评估数据进行了比较.
主要成果:
- 获得了54Fe (n,p) 54Mn,54Fe (n,a) 51Cr,56Fe (n,p) 56Mn和204Pb (n,n,2n) 203Pb反应的试验截面.
- 在实验数据和理论计算之间观察到显著的差异.
- 与其他评估数据相比,在ENDF/B-VIII.0库中发现了54Fe(n,α) 51Cr反应的显著差异.
结论:
- 实验测量为验证核模型和改进评估图书馆提供了有价值的数据.
- 目前的理论模型和评估的核数据库在准确描述这些中子诱导反应方面存在局限性.
- 核模型和数据评估的进一步细化是必要的,特别是对于54Fe ((n,α) 51Cr反应.
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