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US 4,051,403 AGranted
Channel plate multiplier having higher secondary emission coefficient near input
AssigneeThe United States of America as represented by the Secretary of the Army
InventorsRobert M. Feingold, Carl W. Hoover, Jr., John Rennie
Life of this patent
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Abstract
An improved microchannel plate is provided by adding a coating or coatings o the input end of the channels which have a much higher second emission coefficient than the material which forms the body of the plate.
Claims4
In a microchannel plate electron multiplier comprising a plurality of channels, each of said channels having a diameter on the order of 10-15 microns and a length on the order of about 20 mils, the channel wall comprising a conductive glass having a relatively low coefficient of secondary emission, the improvement comprising:
- a first layer of booster material having a relatively high coefficient of secondary emission, and covering said wall from the microchannel plate input for a distance on the order of about 10 channel diameters.
Dependencies are inferred from the claim text.