密闭体内中子源尺寸与位置测定及其中子场构建

Measurement of the Size and Position of Neutron Source and Construction of Neutron Field in Confined Space

通过NM2中子剂量仪测得位于方形水池中的241Am-Be中子源在屋顶处的剂量大小随液面高度的变化曲线,并结合MCNP模拟进行验证,从而确定中子源的尺寸与位置。在此基础上,利用MCNP模拟对本源在特定位置产生中子场的能量与注量率分布构建,从而为后续的实验提供基础。

Using NM2 neutron monitor measure the curve of the radiation dose of roof that caused 241 Am-Be neutron source located in the pool with the height of liquid level,combining the verification by MCNP simulation,so as to determine the size and position of the neutron source.On this basis,MCNP simulation is used to construct the energy and flux distribution of the neutron field generated by the source at a specific location,so as to provide the basis for subsequent experiments.