Showing papers on "Microchannel published in 1971"

Method of making microchannel plates

Abstract: Making glass microchannel plates by drawing bundles of large numbers of glass tubes sufficiently to reduce the cross-sectional sizes of openings through the tubes to desired microchannel size with minimal distortion of original tube shape and wall thickness in resulting assemblies. Drawing is accomplished with no less than two separate steps; a first step being effected with large pulling force and minimal heating and a second step effected with relatively small pulling force, heating to relatively high viscosity and rapid drawing for short exposure to heat.

Image tube employing a microchannel electron multiplier

Abstract: In an image tube, a microchannel electron multiplier plate is disposed between the photocathode and a cathodoluminescent output screen for multiplying the electron current of electron images Electrodes are deposited upon the input and output face of the microchannel electron multiplier plate On the output face the electrode is deposited into the ends of the microchannels to a distance of approximately 2 diameters of the individual channels A semiconductive material, such as zinc sulphide, is deposited over the output electrode in the output ends of the microchannels for causing the secondary electrons emitted from the end portions of the microchannels to show a narrow energy spread, whereby the resolution of the intensified output image is enhanced

Microchannel plates and method of making same

Abstract: Microchannel electron-multiplying plates formed of large numbers of glass-clad glass fibers all bundled tightly together in side-by-side relationship with each other and having their core sections removed for producing electron multiplying channels through the plates. Each channel has an electrically semi-conductive inner wall surrounded by an electrical insulating glass for preventing cross-talk of electrical energy between electron multiplying channels of the plates when the plates are in use.

Microchannel plates in glass mountings

Abstract: A glass electron-multiplying microchannel plate of lead-containing glass is mounted within a supporting rim of another glass. The plate is connected to the rim with a relatively low melting temperature solder glass and the rim is slotted at a number of points about its periphery. The slots extend completely through the rim and partially into the connecting solder glass to protect against fracturing of the assembly during treatment thereof in reducing atmospheres.