Multiple sheet beam gridded electron gun

Details Multiple sheet beam gridded electron gun Multiple sheet beam gridded electron gun

1988-05-16

1989-10-10

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313420, 313448, 313452, H01J 3304, H01J 2958, H01J 1904

Patent

active

048734683

ABSTRACT:
A gun for generating a multiple sheet beams 50 of electrons has a flat surfaced cathode 10 with parallel protruding ridges 12 of non-emitting material forming parallel focus electrodes for the sheet beamlets. A control grid of parallel bars 14 is aligned with the ridges 12 to reduce grid interruption. The beamlets may be focussed between support bars 54 of a foil anode 52 for passing the beam into a high-pressure volume such as a gas laser 48. The ridges are formed by inserting non-emissive bent sheets into grooves 58 in the cathode, which are dovetailed to hold them.

REFERENCES:
patent: 2883576 (1959-04-01), Harries
patent: 3119041 (1964-01-01), Harris
patent: 3440466 (1969-04-01), Colvin et al.
patent: 4061944 (1977-12-01), Gay
patent: 4147953 (1979-03-01), Esterson

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