Comment on progress in scandate cathodes
- 1 January 1989
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Electron Devices
- Vol. 36 (1) , 215-219
- https://doi.org/10.1109/16.21208
Abstract
Emission capability and emission recovery after ion bombardment are discussed. Impregnated top-layer scandate cathodes show better performance than cathodes with a mixed matrix of tungsten and scandia and impregnated cathodes with a sputtered layer consisting of tungsten and scandia. The recovery of scandate cathodes has been considerably improved, and it has been shown that fast emission recovery after ion bombardment is most probably feasible at a cathode operating temperature of 950 degrees C/sub b/.Keywords
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