Wikipedia: Electron_multiplier
Wikipedia: Faraday_cup
MassSpecPro.com: Electron Multiplier
MassSpecPro.com: Faraday Cup
MassSpecPro.com: Image Current Detection
MassSpecPro.com: Microchannel Plates
Image Charge Detection
SIMION Example: secondary
SIMION Example: child_particles
SIMION Example: electrostatic_induction