from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An electrode used in certain electron tubes to provide secondary emission.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of a series of electrodes within a photomultiplier tube.
The materials should still be as close as possible, optically speaking, to the original scintillator, to allow for PMT cross-talk effects such as dynode glow, etc.
The output from the metal channel dynode chain is a current proportional to the number of photons striking the photocathode and to the voltage drops along the dynode channel.
Initial measurement in the 200-250-nm range revealed a rapid increase of the dynode voltage around 220 nm.