热中子通量与元素特征γ射线的关系

Relationship between Thermal Neutron Flux and Characteristicγ-Rays of Elements

用MCNP-4C程序模拟计算20个水泥生料样品,并用线性回归方法研究样品内热中子通量与元素特征γ射线间的关系.计算结果表明,利用二者之间的关系可准确计算热中子通量,并提高了元素质量分数的测量精度.

Twenty samples of cement raw material were calculated by MCNP-4Ccode in order to find the relationship between the thermal neutron flux and the characteristicγ-rays of main elements in sample.The relationship was determined by multiple linear regressions analysis.The result of the calculation shows that the relationship can be used to accurately calculate the thermal neutron flux and improve the identification of the elements contents.