Large‐area lanthanum hexaboride electron emitter

A large‐area cathode assembly which is capable of continuous, high‐current electron emission is described. The cathode utilizes an indirectly heated lanthanum hexaboride (LaB6) disk as the thermionic electron emitter. The LaB6 cathode emits over 600 A of electrons at an average of 20 A/cm2 continuou...

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Veröffentlicht in:	Rev. Sci. Instrum.; (United States) 1985-09, Vol.56 (9), p.1717-1722
Hauptverfasser:	Goebel, D. M., Hirooka, Y., Sketchley, T. A.
Format:	Artikel
Sprache:	eng
Schlagworte:	360204 - Ceramics, Cermets, & Refractories- Physical Properties Applied sciences BORIDES BORON COMPOUNDS CATHODES ELECTRIC DISCHARGES ELECTRODES ELECTRON EMISSION Electronic equipment and fabrication. Passive components, printed wiring boards, connectics Electronics EMISSION Exact sciences and technology FAILURES FRACTURES IMPURITIES LANTHANUM BORIDES LANTHANUM COMPOUNDS LIFETIME MATERIALS SCIENCE PLASMA RARE EARTH COMPOUNDS RELIABILITY THERMIONIC EMISSION
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