How Does a Channeltron Work?
A Channeltron is an electron multiplier that is comprised of a hollow, semiconductive glass “channel” which has an ability to conduct (or transmit) electricity. Channel electron multipliers directly detect and amplify energetic photons and charged particles such as positive and negative ions, electrons and assorted molecular and subatomic particles. When an ion strikes the input face of the device, it causes the electrons on the outermost area of the atom to be released, causing a secondary electron emission. The number of secondary electrons released depends on several factors, such as the type of particle, the angle at which it strikes the surface, and the energy and characteristics of the surface that is struck. These electrons are then accelerated down the channel by a positive bias current which continues to produce additional secondary electron emissions (and so on) until, at the output end of a pulse of 107 to 108 electrons emerges.
The diagram below provides a visual representation of the working principle of Channeltron operation:

Photonis is the pioneer of Channeltron® Electron Multiplier technology, we possess the knowledge and expertise to recommend the ideal detector for your instrument. For years, customers have been using Channeltrons® because of their superior ability to provide the most accurate analysis. Find out why Channeltrons® are the premium choice among instrument manufacturers.