Electron Multiplier in electrons detection

[Ravaner]

Hello. I used discrete electron multiplier (dynodes) for positive ions detection, and it works fine. Now I want to use it for electrons detection with no changes in mode of connecting power supply (-2 kV on 1st dynode, 0 V on last one) . In the past application I don't use the reflector electrode (removed) may I use it as conversion dynode ? With which kind of voltage applied ?

 

[jsgruszynski]

This should answer your question

http://elchem.kaist.ac.kr/vt/chem-ed/optics/detector/pmt.htm

Notice the resistor voltage divider biases the dynodes.

 

[Ravaner]

thanks for your reply. In fact my question is about the use of reflector electrode as conversion dynode.