硝酸铀酰均匀堆堆芯物理设计及特性

novel nuclear reactor core using uranyl nitrate solution as fuel (Uranyl Nitrate Solution Nuclear Reactor, UNSNR) was designed and analyzed by Monte Carlo method. The uranyl nitrate concentration and enrichment, control drum worth effects on nuclear core power distribution and core criticality safety were investigated. The results show that different uranyl nitrate solution concentrations lead to different slowing down partition. Small angles of control drum lead to energy spectrum hardening harden of the core and big angles lead to the quickly decline of radial power. The UNSNR can shut down when control drum accident occurs. Concept of this reactor core combines homogeneous reactor core design with space reactor core control. This work can provide a reference for the design and development of micro homogeneous nuclear reactor.