Channel electron multipliers

Details Channel electron multipliers Channel electron multipliers

1974-06-17

1976-08-24

Segal, Robert

Electric lamp and discharge devices

Photosensitive

Secondary emitter type

313105CM, 328243, H01J 4306, H01J 4310

Patent

active

039769054

ABSTRACT:
A channel electron multiplier is described having a tubular wall coated w a secondary-electron emitting material and including an electric field for accelerating the electrons, the electric field comprising a plurality of low-resistive conductive rings each alternating with a high-resistive insulating ring. The thickness of the low-resistive rings is many times larger than that of the high-resistive rings, being in the order of tens of microns for the low-resistive rings and at least one order of magnitude lower for the high-resistive rings; and the diameter of the channel tubular walls is also many times larger than the thickness of the high-resistive rings. Both single-channel and multiple-channel electron multipliers are described. A very important advantage, particularly in making multiple-channel multipliers, is the simplicity of the procedure that may be used in constructing such multipliers. Other operational advantages are described.

REFERENCES:
patent: 3184633 (1965-05-01), White et al.
patent: 3321660 (1967-05-01), Ramberg
patent: 3458745 (1969-07-01), Shoulders
patent: 3626233 (1971-12-01), Wainer
patent: 3808494 (1974-04-01), Hayashi et al.

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