密封容器中钚部件定位误差对轴对称性判断的影响研究

Investigation on the Effect of Eccentricity the Symmetric Attribute of Plutonium Material in Sealed Container

对称属性是武器用钚部件的一个重要属性。从武器上拆卸下的钚部件通常装在特定的密封容器罐内;当具有轴对称结构的钚部件的对称轴与容器罐对称轴重合时,容器罐外各对称探测点γ辐射场强度服从正态分布,根据γ辐射场强度分布的正态性可以判断容器罐内钚部件的轴对称性。容器罐内钚部件定位系统会有一定误差,当误差达到一定程度时,容器罐外γ辐射场分布将发生变化,各对称探测点γ辐射场强度不再服从正态分布,进而会导致对钚部件轴对称性的误判。文章理论模拟了两轴平行偏离情况下容器罐外γ辐射场分布情况,用W检验法研究了钚部件定位系统误差对钚部件轴对称性判断的影响。

Abstract. The symmetric attribute is an important attribute of plutonium component. Plutonium component is generally installed in sealed container;When the symmetry axis of plutonium component coincide with the symmetry axis of container, The radiation distributing out of the sealed is normal school When the symmetry axis of plutonium component isn＇t superposition with the symmetry axis of container, The radiation distributing out of the Sealed container isn＇t normal school, The estimation is consequently inaccuracy. This article simulated the radiation distributing in theory and investigated the effect of orientation-error.