Wire-ion-plasma electron gun employing auxiliary grid

Details Wire-ion-plasma electron gun employing auxiliary grid Wire-ion-plasma electron gun employing auxiliary grid

1984-06-18

1987-02-10

Chatmon, Saxfield

Electric lamp and discharge devices: systems

Discharge device load with fluent material supply to the...

Plasma generating

31323131, 3133601, 31511181, 31511191, H01J 724

Patent

active

046425225

ABSTRACT:
An improved Wire-Ion-Plasma Electron-gun (WIP E-gun) is disclosed, having a very rapid electron beam current interruption capability. An auxiliary grid is employed to provide a potential barrier to the reservoir of plasma ions in the ionization chamber, thereby containing these ions in the chamber after the wire anode is turned "OFF". The E-gun current fall time is reduced to the time required for the plasma potential to fall in the ionization chamber after the wire anode is turned "OFF". The WIP E-gun current fall time is reduced, from greater than fifteen microseconds for devices not employing the invention, to less than two microseconds.

REFERENCES:
patent: 3970892 (1976-07-01), Wakalopulos
patent: 4025818 (1977-05-01), Giguere et al.
patent: 4458180 (1984-07-01), Sohval et al.

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