公开(公告)号：US5254911A

公开(公告)日：1993-10-19

申请号：US796479

申请日：1991-11-22

申请人： Tzvi Avnery ,  Willem van de Stadt ,  Michael J. Souza

发明人： Tzvi Avnery ,  Willem van de Stadt ,  Michael J. Souza

IPC分类号： G21K5/04 ,  H01J33/00 ,  H01J37/06 ,  G09G1/04 ,  G21K1/08 ,  H01J3/14 ,  H01J29/70

CPC分类号： H01J33/00

摘要： A novel parallel-filament type electron gun for electron beam irradiation accelerators or generators and the like having a plurality of longitudinally extending parallel transversely spaced substantially co-planar similar filaments for generating electrons and disposed between a lower co-extensive extractor grid and an upper co-extensive electrostatic lens surface for shaping the electron beam profile, and with constructional features that enable variable width and extremely wide guns to be achieved and with improved beam uniformity.