公开(公告)号：US4803397A

公开(公告)日：1989-02-07

申请号：US83146

申请日：1987-08-10

申请人： Hinrich Heynisch ,  Josef Hauser ,  Erwin Hubner, deceased

发明人： Hinrich Heynisch ,  Josef Hauser ,  Erwin Hubner, deceased

IPC分类号： H01J1/28 ,  H01J23/04 ,  H01J19/22

CPC分类号： H01J23/04 ,  H01J1/28

摘要： A dispenser cathode such as a metal capillary cathode for electrical discharge devices which has a hollow cylindrical head portion 1 which carries a porous emission wafer 3 of a refractive material at its upper end and covers a cathode cartridge 2 which contains an active material supply 4 and comprises an epoxy helical heater 5 surrounded by a metal sleeve 6. Two part division of the structure allows separate testing possibility of the emission wafer and the heater/supply cartridge and also allows an improvement in the heat transmission from the heater to the emission wafer. For this purpose, a hollow cylindrical head portion 1 is conically-shaped and expands outwardly toward the cathode cartridge 2 and the upper part of the cathode cartridge 2 is conically tapered so as to mate with the hollow cylindrical head portion and the two portions are connected together wherein their conical side walls are attached by welding in the upper portion of the drawn up metal sleeve. The dispenser cathode can be used in travelling wave tubes for example.

摘要翻译： 分配器阴极，例如用于放电装置的金属毛细管阴极，其具有中空的圆柱形头部1，其在其上端承载折射材料的多孔发射晶片3并且覆盖包含活性材料供应4的阴极盒2和 包括由金属套筒6围绕的环氧螺旋加热器5.结构的两部分分割允许发射晶片和加热器/供应盒的单独的测试可能性，并且还允许改进从加热器到发射晶片的热传递。 为此，中空的圆柱形头部1是圆锥形的并且朝向阴极筒2向外扩张，并且阴极筒2的上部是锥形的，以便与中空圆柱形头部配合，并且两个部分连接 一起，其中其锥形侧壁通过焊接附接在拉伸的金属套筒的上部。 分配器阴极可以用于例如行波管中。