Gain, Pulse Power Distribution, and Single Electron Counting Efficiency of P-20,P-47, and X-3 Phosphors

摘要

Analysis has been made of the dc gain, the pulse power distribution (PPD) and thesingle photoelectron counting efficiency of P-20, P-47 and X-3 phosphors. The results have been obtained by testing fully operating image intensifiers as well as by examining phosphor screen samples using a scanning electron microscope. Two P-47 intensifiers were manufactured by ITT with the screens processed in identically the same way as the screens used in the diode front end of the NOSC hybrid detector. A new two-dimensional photon counter has been constructed to detect single photoelectron pulses and to measure the PPD of even the NOSC poorly-focused proximity diode intensifier, as well as other intensifiers. (JES)