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发明名称
Thermionic emission cathode having a tip of a single crystal of lanthanum hexaboride
摘要
A single crystal of lanthanum hexaboride is used as a tip of a thermionic emission cathode.
申请公布号
US4055780(A)
申请公布日期
1977.10.25
申请号
US19760675963
申请日期
1976.04.12
申请人
NATIONAL INSTITUTE FOR RESEARCHES IN INORGANIC MATERIALS
发明人
KAWAI, SHICHIO;TANAKA, TAKAHO;BANNAI, EISUKE;UCHIDA, KENJI;SHIMIZU, RYUICHI
分类号
H01J1/148;(IPC1-7):H01J1/14;H01J19/06;H01K1/04
主分类号
H01J1/148
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代理人
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