蒙特卡罗方法在修正中子俘获反应截面测量中的应用

Application of Monte-Carlo Method on the Correction of Experimental Data of Neutron Capture Cross-section

作者采用MCNP4B程序，对中子俘获截面测量中，由于多次散射、自屏蔽效应等引起的数据歧离修正方法进行了研究．针对在北京大学4．5MeV静电加速器上进行的^152Sm（n，γ）^153 Sm22～1019keV能区中子俘获截面的测量，对其多次散射及自屏蔽效应修正因子进行了计算．

With the MCNP4B code, neutron capture cross-section experiment data was corrected for multiple scattering and self-sheilding effects. Compared with the experiment carried out on 4.5MeV electrostatic accelerator at Peking University, the authors obtained its multiple scattering and self-sheilding correction factor about the ^152Sm（ n,γ）^153Sm reaction in the neutron energy range of 22-1019 keV.