固定电极式静电沉降器设计和研制

THE DESIGN AND DEVELOPMENT OF THE FIXED ELECTRODE PRECIPITATOR

一、前言目前快堆上通常使用的燃料元件破损探测方法有两种:一种是缓发中子探测系统,监测主钠回路中缓发中子强度;另一种是监测覆盖气体中的裂变产物强度。探测覆盖气体中裂变产物可用多种方法:Ge(Li)γ谱仪、闪烁计数器、静电沉降器、电离室、气体色谱、质谱仪、气体标记和活性碳吸附等。静电沉降器具有灵敏度高、设备便宜等优点。

The paper briefly introduces the design and development of the fixed electrode precipitator and the results of preliminary adjustment. In order to improve sensitivity ,disturbance from background radioactive nuclides will be minmized as far as possible by selecting small size counter and reducing the volume of depositing chamber. Three kinds of geometry will be compared. The results of preliminary adjustment show that the precipitators designed work well.