Abstract:
The channels in a channel plate are divided into sub-channels by longitudinal septa which are twisted along the length of the channels in order to prevent ion feedback. An angle of twist of 360* may be used in order to permit each sub-channel to represent a separate picture element.
Abstract:
The surface conductive channels in the channel plate have areas of reduced conductivity sufficient to prevent the build-up of electrostatic charges. The areas extend continuously between the input and output electrodes and are normal to the plane of inclination of the channels.
Abstract:
Perforate metal layers having aligned apertures defining channels are closely spaced from each other by uniformly distributed arrays of separator elements which accurately maintain relative spacing under varying temperature conditions even though the separator elements and metal layers have different coefficients of thermal expansion.
Abstract:
In the manufacture of large-diameter (e.g., 124 mm or over) channel and fibre-optic plates a polygonal pack of fibres is compressed and fused in an oven by curved convex rams so that the resulting compressed pack has concave sides of substantially the same length as its initial straight sides. Most of the distortion of the fibre array occurs at the corners and the distorted corner areas can be removed so as to leave a circular plate of good quality.