Vega-Carrillo H R, Hernández-Dávila V M, Aguilar F, Paredes L, Rivera T
Unidad Académica de Estudios Nucleares de la Universidad Autónoma de Zacatecas, C. Ciprés 10, Fracc. La Peñuela, 98068 Zacatecas, Zac. Mexico.
Appl Radiat Isot. 2014 Jan;83 Pt C:252-5. doi: 10.1016/j.apradiso.2013.04.008. Epub 2013 May 22.
The neutron spectra have been measured in two beam ports, one radial and another tangential, of the TRIGA Mark III nuclear reactor from the National Institute of Nuclear Research in Mexico. Measurements were carried out with the reactor core loaded with high enriched uranium fuel. Two reactor powers, 5 and 10 W, were used during neutron spectra measurements using a Bonner sphere spectrometer with a (6)LiI(Eu) scintillator and 2, 3, 5, 8, 10 and 12 in.-diameter high-density polyethylene spheres. The neutron spectra were unfolded using the NSDUAZ unfolding code. For each spectrum total flux, mean energy and ambient dose equivalent were determined. Measured spectra show fission, epithermal and thermal neutrons, being harder in the radial beam port.
在墨西哥国家核研究所的TRIGA Mark III核反应堆的两个束流孔道中测量了中子能谱，一个是径向的，另一个是切向的。测量是在反应堆堆芯装载高浓缩铀燃料的情况下进行的。在使用带有(6)LiI(Eu)闪烁体的邦纳球谱仪和直径为2、3、5、8、10和12英寸的高密度聚乙烯球进行中子能谱测量期间，使用了5瓦和10瓦两种反应堆功率。使用NSDUAZ解谱代码对中子能谱进行了解谱。对于每个能谱，确定了总通量、平均能量和环境剂量当量。测量的能谱显示出裂变中子、超热中子和热中子，在径向束流孔道中的能谱更硬。
