Electron multiplier with ion bombardment shields

Details Electron multiplier with ion bombardment shields Electron multiplier with ion bombardment shields

1976-04-23

1980-01-08

Segal, Robert

Electric lamp and discharge devices

Photosensitive

Plural secondary emissive electrodes

313400, H01J 4310, H01J 4320

Patent

active

041829689

ABSTRACT:
A chain of planar dynodes is divided into two groups which are spaced from and substantially parallel to each other. A cathode which is capable of emitting electrons upon ion bombardment is at one end of the dynode chain. An envelope encloses the dynodes and the cathode. Also enclosed by the envelope are a plurality of shields. Each shield is located so as to prevent gas ions, present within the envelope, from striking the dynodes, while allowing the ions to strike the cathode.

REFERENCES:
patent: Re20545 (1937-11-01), Jarvis et al.
patent: 2231682 (1941-02-01), Rajchman et al.
patent: 2231691 (1941-02-01), Snyder
patent: 2274092 (1942-02-01), Pierce
patent: 3904923 (1975-09-01), Schwartz

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