氧化铅摄象管靶面斑点的研究

Study of Specks in the Target of PbO Camera Tubes

本文介绍几种常用的观察和分析氧化铅摄象管靶面斑点的方法。研讨各种斑点形成的机理和制作工艺、原材料纯度对氧化铅摄象管斑点形成的影响,提出减少和消除各种斑点的工艺措施,使氧化铅摄象管的斑点得到改善。

This paper introduces several methods of observing and analysing the specks and discusses the forming mechanizm of all kinds of spec-ks in the target.The specks are essentially caused by the irregulardefects of multilayer structure of the PbO target and the mechanicaldefects due to dust particles.The specks in the target are mainly aff-ected by the purity of the PbO materials and the deposition techno-logy of PbO layer.The results show that the specks in the target ofthe PbO camera tube can be prevented or reduced by using the newmanufacture technology and the high purity PbO materials.