Channel plate electron multiplier

Details Channel plate electron multiplier Channel plate electron multiplier

1981-06-29

1983-12-20

Demeo, Palmer C.

Electric lamp and discharge devices

Photosensitive

Plural secondary emissive electrodes

313107, 313353, 313355, H01J 4322

Patent

active

044220057

ABSTRACT:
In a channel plate electron multiplier having a stack of perforated conducting sheet dynodes insulated from one another, electrons incident on the input face of the stack which do not enter the channels give rise to unwanted secondary electrons which move transverse to the channels in the space in front of the stack. These secondary electrons enter channels remote from the point of incidence and thereby degrade the definition and contrast of an electron image transmitted by the channel plate. A layer of material having a low secondary electron emission, which may be on a sheet carrier, is provided on the stack input face.

REFERENCES:
patent: 3346752 (1967-10-01), Battson
patent: 3449582 (1969-06-01), Sackinger
patent: 3760214 (1973-09-01), Yamazaki et al.
patent: 3814966 (1974-06-01), Misumi et al.
patent: 4023063 (1977-05-01), King et al.
patent: 4051403 (1977-09-01), Feingold et al.
W. H. Kohl, Handbook of Materials and Techniques for Vacuum Devices, Reinhold Publishing Corp., pp. 569-571.

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