公开(公告)号：US5729084A

公开(公告)日：1998-03-17

申请号：US2286

申请日：1993-01-08

申请人： John Richard Hale ,  Jeffrey M. Farina ,  Philip J. Koehler ,  Nicholas Maropis

发明人： John Richard Hale ,  Jeffrey M. Farina ,  Philip J. Koehler ,  Nicholas Maropis

IPC分类号： H01J1/26 ,  H01J29/04 ,  H01J29/46

CPC分类号： H01J29/04 ,  H01J1/26

摘要： A cathode sheath for a thermionic electron-gun cathode. The sheath is substantially in the form of a hollow cylinder and has an outer surface and an inner surface, a central axis, a closed end and an axially-opposite open end, and a side wall extending between the closed end and the open end. The sheath is a continuous bimetallic laminate having a first layer of material forming the inner surface and a second layer of electron-emissive material overlying substantially the entirety of the first layer and forming the outer surface. The laminate has a preselected thickness at the closed end and has a thickness at the side wall which varies along the central axis.

摘要翻译： 用于热电子枪阴极的阴极护套。 护套基本上是中空圆柱体的形式，并且具有外表面和内表面，中心轴线，封闭端和轴向相对的开口端，以及在封闭端和开口端之间延伸的侧壁。 护套是具有形成内表面的第一材料层和覆盖基本上整个第一层并形成外表面的第二电子发射材料层的连续双金属层压体。 层压板在封闭端具有预选的厚度，并且在侧壁处具有沿中心轴线变化的厚度。