Khabaz Rahim, Rene Vega-Carrillo Hector
Physics Department, Faculty of Sciences, Golestan University, Gorgan 49138-15739, Iran.
Appl Radiat Isot. 2013 Aug;78:46-50. doi: 10.1016/j.apradiso.2013.03.090. Epub 2013 Mar 31.
In this study, the neutron emission rate from neutron sources using prompt gamma rays in hydrogen was determined, and several improvements were applied. Using Monte Carlo calculations, the best positions for the source, moderator and detector relative to each other were selected. For (241)Am-Be and (252)Cf sources, the sizes for polyethylene spheres with the highest efficiency were 12- and 10-inch, respectively. In addition, a new shielding cone was designed to account for scattered neutrons and gamma rays. The newly designed shielding cone, which is 45 cm in length, provided suitable attenuation for the source radiation.
在本研究中，测定了利用氢中的瞬发伽马射线的中子源的中子发射率，并进行了多项改进。通过蒙特卡罗计算，选择了源、慢化剂和探测器彼此之间的最佳位置。对于（241）Am-Be和（252）Cf源，效率最高的聚乙烯球尺寸分别为12英寸和10英寸。此外，设计了一种新的屏蔽锥以考虑散射中子和伽马射线。新设计的屏蔽锥长度为45厘米，可为源辐射提供适当的衰减。
