III-V photocathode with nitrogen doping for increased quantum ef
Image converter tube with contrast enhancing filter which partia
Image intensifier tube with insulator shield
Image intensifier with fiber optic faceplates sealed with indium
Image tube
Image tube cathode
Insulating nitride compounds as electron emitters
Ion chamber with a flat sensitivity response characteristic
Ionization chamber having coaxially arranged cylindrical electro
Ionization chamber making it possible to measure high energy gam