High-efficiency secondary-electron emission from sputtered MgO–Au cermets
- 1 July 1973
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 23 (1) , 7-8
- https://doi.org/10.1063/1.1654735
Abstract
We have obtained high‐efficiency secondary‐electron emission from a new sputtered cermet system, MgO–Au. Peak yields of 8 and quantum gain for primary‐electron energies as low as 17 eV have been achieved on thick films without the presence of surface charging. The very small insulator particle sizes (< 50 Å) in the films permit removal of surface charge by tunneling to adjacent metallic regions. This type of emitter is potentially useful for secondary‐emitting cathodes in high‐power device applications as well as low‐power electron multiplication.Keywords
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