Magnetron having a secondary electron emitter isolated from an end shield
AssigneeNorthrop Grumman Corporation
InventorVladimir Makhov
Life of this patent
Estimating the term…
Abstract
The present invention relates to magnetrons and is aimed to improve effectiveness of using a working surface of field-electron emitters, to improve reliability of devices under conditions of increased mechanical action. These objects are solved in the design of a magnetron, comprising an anode and a cathode disposed co-axially inside the anode, the cathode comprising a secondary-electron emitter; a field-electron emitter and lateral flanges functioning as focusing shields, wherein at least one of the focusing shields is located from the secondary-electron emitter and comprises at least one field-electron emitter with a working end-face thereof facing the surface of the secondary-electron emitter.
Claims11
A magnetron comprising a hollow cylindrical anode, and a cathode assembly co-axially surrounded by the anode, said cathode assembly comprising:
- a cylindrical secondary-electron emitter co-axial with the anode;
- at least one field-electron emitter provided with a respective sharpened working end-face;
- and
- a pair of focusing shields located on end-faces of the cathode assembly and defining, together with the anode and the secondary-electron emitter, an evacuated resonant cavity;
- at least one of said focusing shields being electrically isolated from the secondary-electron emitter, and
- said at least one field-electron emitter being located on an inner surface of said at least one focusing shield within the evacuated resonant cavity with said respective sharpened working end-face adjacent to and spaced from an outer surface of the secondary-electron emitter.
Dependencies are inferred from the claim text.