【摘要】 介绍了以4 mm× 0 .0 0 5mm的金箔为探测片 ,采用绝对与相对测量法测量 30 0 #- 1靶片内部热中子注量率分布的原理和方法。给出了靶片所在堆芯位置的绝对中子注量率和靶片内相对中子注量率分布。为靶片自屏因子的确定提供了测量数据。更多还原

【Abstract】 The fundamental principle and methods are introduced in this paper for measurement of the Thermal Neutron Flux Rate of 300 # 1 targets with the absolute and relative measurement systems of No.300 Reactor,using metal detect foil of 4mm×0.005mm. Absolute neutron flux rates where these targets are positioned in the core and thermal neutron flux distributions inside them are presented, Thus, an important foundation to determine target’s self shielding factor is constructed.更多还原