Study on Composite Material for Shielding Mixed Neutron and γ-Rays
Study on Composite Material for Shielding Mixed Neutron and γ-Rays
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DOI：
10.1109/tns.2008.2000800
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发表时间：
2008-08-01
影响因子：
1.8
通讯作者：
Zhan, Yuanping
中科院分区：
文献类型：
--
作者：
Hu, Huasi;Wang, Qunshu;Zhan, Yuanping
采用遗传算法（GA）结合蒙特卡罗n粒子（MCNP）编码，开发出了轻量、紧凑、耐高温的中子和伽马辐射屏蔽材料。根据该方法设计了一系列的样品。完成了MCNP代码的深度渗透测试。结果表明，与PB202和KRAFTON-XP3相比，所设计的样品在辐射屏蔽效果方面具有更多的优势，特别是具有多层结构的pb层蛋糕具有优异的性能。采用差示扫描量热法（DSC），根据设计的材料中各元素组分的配比，对纳米tio2制备聚合物的过程进行了实验研究。已经对几个样本进行了测试。采用串联静电加速器中子源、自发裂变中子源Cf-252和伽马射线源Co-60对样品进行衰减实验。实验结果验证了优化设计和工艺的正确性。这些蛋糕非常适合在核科学与技术实践中应用。
Optimized lightweight, compact and high temperature sustaining shielding materials for neutron and gamma radiation were developed by genetic algorithms (GA) combined with the Monte Carlo N-Particle (MCNP) code. A series of samples were designed according to the method. Deep penetration tests by the MCNP code were completed. The results show that the designed samples have more advantages related to the radiation shielding effects in comparison with PB202 and KRAFTON-XP3, especially the Cakes with multi-layers structures of the terlayer-Pb have excellent performance. Taking into account the ratios designed of components among elements in the material, the manufacturing process of polymer with nano-TiO2 was studied experimentally by differential scanning calorimetry (DSC). Several samples have been tested. The attenuation experiments on the samples were carried out using tandem electrostatic accelerator neutron source, spontaneous fission neutron source of Cf-252 and gamma-rays source of Co-60. The experimental results verify the correctness of optimal design and craft. The Cakes are quite suitable for applications in the practices of nuclear science and technology.