论文部分内容阅读
核电作为一种经济、清洁和环保的能源已经越来越被世界各国所重视,锆合金因其优秀的物理和化学性质被广泛用作水冷动力堆的包壳材料和堆芯结构材料,成为核电站的重要应用结构材料核素。国际上各大数据库中都有对锆的5个稳定天然同位素(90,91,92,94,96Zr)的中子数据评价结果,其中90Zr的丰度最高(51.45%),是重点评价的部分。中国CENDL库第2版中(20世纪90年代初)给出了对天然锆元素的评价结果,之后于1999年由中国核数据中心与郑州大学合作评价了Zr各个天然同位素的中子全套数据(CENDL-3.0版本),文献[1-3]中分别对当时的理论计算和实验数据评价进行了描述,该结果中给出了一套可很好的描述实验数据的光学模型参数,各主要反应截面与实
As an economical, clean and environment-friendly energy source, nuclear power has been paid more and more attention by all over the world. Because of its excellent physical and chemical properties, zirconium alloy is widely used as cladding material and core structural material for water-cooled power plants and has become a nuclear power plant The important application of structural material nuclides. In the major international databases, there are five neutron data of zirconium stable natural isotopes (90,91,92,94,96Zr). Among them, 90Zr has the highest abundance (51.45%), which is the key evaluation part . The results of the evaluation of natural zirconium elements were given in the second edition of China's CENDL Library (early 1990s). In 1999, CNNIC and Zhengzhou University evaluated the complete set of neutron data for all natural isotopes of Zr ( CENDL-3.0). In the literature [1-3], the theoretical calculations and the experimental data evaluation were described respectively. A set of optical model parameters describing the experimental data are given. The main reactions Section and real