Abstract The main objective of the present work is to assess the use of theoretical studies in finding the appropriate working conditions for experiments used in the production of neutron beams. A model has been designed and built using MATLAB programming language to perform the calculations required to generate filtered neutron beams in different energy ranges. The selection of the primary and additive materials has been obtained as a function of the material mass-thickness in g/cm2 to emit high intensity and purity for the desired neutron energies. The development of quasi-mono-energetic neutron beams has been conducted at energies of 5.2, 13.3, 47.0, and 73.0 keV. The generated beams have been evaluated and compared to previous findings on the same energies. Results obtained in the present work enhance the use of these filters in cross-section measurements and BNCT owing to the fact that they have high intensity and purity with reasonable resolution value ( Δ E ). Moreover, high attenuation of both thermal and fast neutrons except the desired energy value has been observed.

中文翻译：

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用于反应截面测量的准单能中子束的产生：模拟研究

摘要 目前工作的主要目的是评估理论研究在为中子束生产中使用的实验寻找合适的工作条件方面的用途。使用 MATLAB 编程语言设计并构建了一个模型，以执行生成不同能量范围内的过滤中子束所需的计算。主要材料和添加剂材料的选择已作为材料质量厚度（g/cm2）的函数而获得，以发射高强度和纯度的中子能量以获得所需的中子能量。准单能中子束的开发已在 5.2、13.3、47.0 和 73.0 keV 的能量下进行。产生的光束已经过评估，并与之前在相同能量下的发现进行了比较。在目前的工作中获得的结果增强了这些过滤器在横截面测量和 BNCT 中的使用，因为它们具有高强度和纯度以及合理的分辨率值 (ΔE)。此外，除了所需的能量值外，还观察到热中子和快中子的高衰减。