On the other hand, when the light intensity becomes so low below lx that the incident photons are separated in time and space, the photocathode emits very few photoelectrons and only one or no photoelectrons enter each channel of the MCP. This process is repeated several tens times by the potential gradient across the both ends of the MCP and a large number of electrons are in this way released from the output end of the MCP. Buckley C. Masahiro Ogawa. Ladir Silva.
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