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