Simulation study of the channel on correcting neutron self-shielding effect in bulk coal

Feiyue Shi; Jiayi Ma; Jingwu Zhao; Shengkang Liu
May 2010
Journal of Radioanalytical & Nuclear Chemistry;May2010, Vol. 284 Issue 2, p327
Academic Journal
Neutron self-shielding effect in bulk materials impairs analysis of elements using prompt gamma-rays induced by thermal neutron capture reaction. For the on-line coal analysis setups of Nanjing Dalu Zhongdian Technology Joint-Stock Co., Ltd, Monte-Carlo simulations have been performed to investigate effect of the channel on correcting neutron self-shielding effect and improving measurement of H in coal. The results show that, by introducing an adequate channel in the moderator, the self-shielding effect can be corrected, and the linear concentration region of H can be extended effectively.


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