Electric lamp and discharge devices – Discharge devices having an electrode of particular material
313352, 313353, 313355, H01J 130, H01J 2304
The electron source disclosed comprises a solid having a first semiconductor layer capable of releasing electrons under the effect of an electrical field, means to make at least one of its faces partially transparent to at least one part of the released electrons, and to enable this part of the electrons to be ejected from the solid, and a second unstable composite semiconductor layer having a structure having a negative differential resistance located between the first layer and its face which is at least partially transparent, in contact with the first layer. The electron source further includes means to form, with said first layer and the composite layer, an electrical resonant cavity.
patent: 2960659 (1960-11-01), Burton
patent: 3056073 (1962-09-01), Mead
patent: 3334248 (1967-08-01), Stratton
patent: 3447045 (1969-05-01), Hickmott
International Electron Devices Meeting, Dec., 1985, pp. 342-345, IEEE, M. Shrader et al.: "Pre-Bunched Beam Devices-Efficient Sources of UHF and Microwave Power".
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