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积分实验是检验评价中子核数据准确性的重要手段,利用标准样品法,对中国原子能科学研究院的积分实验系统进行了检验。标准样品分别采用聚乙烯(10 cm×10 cm×5 cm)和水(φ10 cm×5 cm),通过中子飞行时间技术,获得了14 MeV氘氚脉冲中子与聚乙烯作用后47。方向泄漏中子谱,与水作用后30°方向泄漏中子谱。利用MCNP5程序获得相应的模拟,对模拟谱(C)与实验谱(E)
The integral experiment is an important means to test the accuracy of the neutron data. The standard sample method is used to test the integral experimental system of China Institute of Atomic Energy. Standard samples were obtained using polyethylene (10 cm × 10 cm × 5 cm) and water (φ10 cm × 5 cm), respectively, and the effect of 14 MeV deuterium tritium pulse neutron on polyethylene was obtained by neutron time-of-flight technique. Leakage of neutron spectra in the direction of leakage of neutron spectra in the direction of 30 ° with water. Using MCNP5 program to obtain the corresponding simulation, the simulation spectrum (C) and experimental spectrum (E)