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EBI<br />
Dark current of photocathodes<br />
EBI sets lower detection limit<br />
EBI = 0.02 ... 0.1 photoelectrons/pixel/s<br />
Higher for red sensitive photocathodes (lower work<br />
functions)<br />
EBI can be minimized by:<br />
- storing intensifier in darkness (> 1 h)<br />
- cooling the photocathode<br />
(not necessary in a gated application)
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