Field emission electron gun

Details Field emission electron gun Field emission electron gun

1979-07-11

1981-06-16

Smith, Alfred E.

Electric lamp and discharge devices: systems

Discharge device load

Movable electrode discharge device

315107, 315291, 250311, 250398, G21K 700

Patent

active

042740355

ABSTRACT:
A field emission electron gun including a cathode, a control electrode which is disposed in the vicinity of the cathode, an anode which is disposed for accelerating electrons emitted from the cathode, and a source of a D.C. voltage to be applied between the cathode and the anode. Also, there is provided a switching arrangement capable of changing-over a potential of the control electrode between ground potential and a potential of the cathode, and an arrangement capable of varying relative positions of the cathode and the control electrode.

REFERENCES:
patent: 3292041 (1966-12-01), Katagiri et al.

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