Accession Number : AD0750364
Title : Measurement of the Angular Distribution of Photoelectrons from Third Generation Photocathode Materials,
Corporate Author : ARMY ELECTRONICS COMMAND FORT BELVOIR VA NIGHT VISION LAB
Personal Author(s) : Pollard,John H.
Report Date : 1972
Pagination or Media Count : 14
Abstract : The experimental measurements of the angular distribution of photoemitted electrons from cesium-oxygen activated p-type GaAs surfaces shows a highly directional photoemission approximately independent of the surface orientation. The mathematical model explaining these observations shows the expected Lambertian distribution is modulated by a strong exponential function resulting from the attainment of negative electron affinity conditions.
Descriptors : (*SEMICONDUCTOR DEVICES, PHOTOCATHODES), (*PHOTOCATHODES, PHOTOELECTRIC EFFECT), (*IMAGE INTENSIFIERS(ELECTRONICS), PHOTOCATHODES), GALLIUM ARSENIDES, INFRARED RADIATION, MATHEMATICAL MODELS
Subject Categories : Electrooptical and Optoelectronic Devices
Distribution Statement : APPROVED FOR PUBLIC RELEASE