快中子和热中子与甲基橙有机染料溶液相互作用过程的研究
Research of interaction processes of fast and thermal neutrons with solution of methyl orange organic dye
摘要：
本文研究了中子通量与有机染料甲基橙水溶液的相互作用过程。这项工作在NSC KIPT的LINAC LUE-300上进行。一组钨板被用作中子产生靶。电子能量为15 MeV，平均电流为20 mkA。样品位于铅屏蔽和不带铅屏蔽、带和不带减速剂的后面。使用Geant 4工具包进行实验，计算了没有减速剂和不同厚度（1-5厘米）减速剂的实验样品位置的中子通量及其能谱。对实验结果的分析表明，当没有铅屏蔽和没有减速剂的物体受到辐照时，染料分子被完全破坏。在铅保护的存在下，观察到10%的染料分子的破坏。当一个5厘米的聚乙烯慢化剂安装在铅屏蔽后面时，没有硼酸的染料分子对热中子的破坏几乎没有观察到。当热中子和超热中子的通量与含有4%硼酸的染料溶液相互作用时，由于放热反应10 B（n，a），观察到30%的染料分子被破坏。研究表明，有机染料溶液是一种很好的材料，用于制造记录热中子和超热中子通量的探测器。这种探测器可用于环境的放射生态学监测、核能工程和核医学，特别是中子俘获治疗研究领域。
英文摘要：
The processes of neutron fluxes interaction with an aqueous solution of methyl orange organic dye have been investigated. The work was carried out on a LINAC LUE-300 at NSC KIPT. A set of tungsten plates was used as a neutron-generating target. The electron energy was 15 MeV, the average current was 20 mkA. The samples were located behind the lead shield and without it, with and without a moderator. Using the Geant4 toolkit for this experiment, neutron fluxes and their energy spectra were calculated at the location of experimental samples without a moderator and with a moderator of different thickness (1-5 cm). An analysis of the experimental results showed that when objects without lead shielding and without a moderator are irradiated, the dye molecules are completely destroyed. In the presence of lead protection, 10% destruction of the dye molecules was observed. When a five-centimeter polyethylene moderator was installed behind the lead shield, the destruction of dye molecules without boric acid on thermal neutrons was practically not observed. When the fluxes of thermal and epithermal neutrons interacted with a dye solution containing 4% boric acid, 30% destruction of dye molecules was observed due to the exothermic reaction 10B (n, a). The research has shown that solutions of organic dyes are a good material for creating detectors for recording fluxes of thermal and epithermal neutrons. Such detectors can be used for radioecological monitoring of the environment, in nuclear power engineering and nuclear medicine, and in the field of neutron capture therapy research in particular.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
