Carrera de Ingeniería Electrónica, Grupo de Investigación en Micro-Nanotecnología y Energía Nuclear, (NANOTECH), Universidad Politécnica Salesiana, C. Robles 107 Chambers, 090108, Guayas, Guayaquil, Ecuador.
Departmento de Ingeniería Energética, ETSI Industriales, Universidad Politécnica de Madrid, C. José Gutiérrez Abascal 2, 28006, Madrid, Spain.
Appl Radiat Isot. 2023 Apr;194:110694. doi: 10.1016/j.apradiso.2023.110694. Epub 2023 Jan 25.
The thermal neutron irradiation device (FANT), developed at the Neutron Measurements Laboratory of the Energy Engineering Department at Universidad Politécnica de Madrid, is a high-density polyethylene regular parallelepiped, with a rather uniform neutron fluence inside its irradiation chamber. It uses a Am95241/Be49 neutron source aiming to provide thermal neutron fluence rates. Neutron spectra and neutron fluences were estimated with Monte Carlo methods in the FANT irradiation chamber when a Cf98252 neutron source is used and were compared with the results obtained with the Am95241/Be49 source. Regardless of the neutron source, the largest contribution is due to thermal neutrons, producing also epithermal and fast neutrons. Per neutron emitted by the source, the use of Cf98252 produces a larger amount of neutrons.
西班牙马德里理工大学能源工程系中子测量实验室开发的热中子辐照装置（FANT）是一个高密度聚乙烯规则平行六面体，辐照室内的中子通量相当均匀。它使用 Am95241/Be49 中子源来提供热中子通量率。当使用 Cf98252 中子源时，使用蒙特卡罗方法估算了 FANT 辐照室内的中子能谱和中子通量，并将结果与使用 Am95241/Be49 源获得的结果进行了比较。无论使用哪种中子源，最大的贡献都来自热中子，同时也会产生超热中子和快中子。对于每个由源发射的中子，Cf98252 的使用会产生更多的中子。
