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41.发明授权Thermionic emission cathode having a tip of a single crystal of lanthanum hexaboride 失效具有六硼化镧单晶尖端的热电子发射阴极
公开(公告)号：US4055780A
公开(公告)日：1977-10-25
申请号：US675963
申请日：1976-04-12
Applicant: Shichio Kawai , Takaho Tanaka , Eisuke Bannai , Kenji Uchida , Ryuichi Shimizu
Inventor： Shichio Kawai , Takaho Tanaka , Eisuke Bannai , Kenji Uchida , Ryuichi Shimizu
CPC classification number: H01J1/148
Abstract: A single crystal of lanthanum hexaboride is used as a tip of a thermionic emission cathode.
Abstract translation: 六硼化镧的单晶用作热离子发射阴极的尖端。
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公开(公告)号：US3312856A
公开(公告)日：1967-04-04
申请号：US26810763
申请日：1963-03-26
Applicant: GEN ELECTRIC
Inventor： LAFFERTY JAMES M , GRAMS WILLIAM R
IPC: H01J1/148
CPC classification number: H01J1/148
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