channelplate

 
 

A channel plate is a two-dimensional electron multiplier. It’s name stems from the fact that it is made as a glass plate with many small holes (channels) through it. It is coated with a highly resistive material and a high voltage is applied from the front to the back of the plate. In this way, an electron entering a channel will cause an avalanche of secondary electron emission. A channelplate can be understood as a simple two-dimensional assembly of many single continuous dynode electron multipliers.

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