Hajdú D, Dian E, Gméling K, Klinkby E, Cooper-Jensen C P, Osán J, Zagyvai P
Hungarian Academy of Sciences, Centre for Energy Research, 29-33. Konkoly-Thege M., 1525 Budapest, Hungary; University of Pannonia, Institute of Radiochemistry and Radioecology, 10. Egyetem, 8200 Veszprém, Hungary.
Hungarian Academy of Sciences, Centre for Energy Research, 29-33. Konkoly-Thege M., 1525 Budapest, Hungary; European Spallation Source ESS ERIC, P.O Box 176, 221 00 Lund, Sweden; Budapest University of Technology and Economics, Institute of Nuclear Techniques, 9. Műegyetem rakpart 1111 Budapest, Hungary.
Appl Radiat Isot. 2021 May;171:109644. doi: 10.1016/j.apradiso.2021.109644. Epub 2021 Feb 17.
The neutron activation of shielding materials and the generated decay gamma radiation are well-known issues in terms of occupational exposure. Though the trace elements of shielding concretes can be dominant sources of the produced activity in such cases, their concentrations are often missing from the input data of shielding-related Monte Carlo simulations. For this reason, three concrete types were studied, that were considered in the European Spallation Source (ESS) ERIC. Their composition - including the trace elements - were determined via XRF, PGAA and NAA techniques. Realistic input data were developed for these materials, containing the parent elements of all the dominant radioisotopes, and were validated against measured data of neutron irradiation experiments.
就职业照射而言，屏蔽材料的中子活化以及产生的衰变伽马辐射是众所周知的问题。尽管在这种情况下屏蔽混凝土中的微量元素可能是产生放射性的主要来源，但屏蔽相关蒙特卡罗模拟的输入数据中往往缺少它们的浓度。因此，对欧洲散裂中子源（ESS）ERIC中考虑的三种混凝土类型进行了研究。通过X射线荧光光谱法（XRF）、质子激发X射线发射分析（PGAA）和中子活化分析（NAA）技术确定了它们的成分，包括微量元素。针对这些材料开发了包含所有主要放射性同位素母体元素的实际输入数据，并根据中子辐照实验的测量数据进行了验证。
