Spectral result regarding photocathodes

In early 1940s the JEDEC (Joint Electron Devices DesignP2003EVG

 Authority), a market panel on standardization, designed a program of assigning spectral replies.The particular school of thought provided the idea that the actual item'sMN101E11GTD1

 individual need only stress about the particular response with the unit rather than the way the unit could possibly be designed. Numerous combinations of photocathode along with windowpaneCM8870P1

 supplies have been allocated S-numbers ranging coming from S-1 through S-40, which are still used these days. By way of example, S-11 makes use of your caesium-antimony photocathode having a calcium glass windowpane,PSR10C40CT

 S-13 uses exactly the same photocathode using a fused silica eye-port, along with S-25 uses a so-called "multialkali" photocathode (Na-K-Sb-Cs, as well as sodium-potassium-antimony-caesium) that delivers lengthy response in debt1MBH50-060

 part of the particular obvious mild range. Zero ideal photoemissive areas possess but already been described to be able to find wavelengths more than about 1700 nanometers, that may be approached by a particular photocathode.