Accession Number : AD0471662


Title :   DIRECT AND INDIRECT ELECTRON CONTROL BY PHOTOCONDUCTIVE ELEMENTS.


Descriptive Note : Final technical progress rept. 20 Jun 64-20 Jun 65.


Corporate Author : HRB-SINGER INC STATE COLLEGE PA


Report Date : 20 Jun 1965


Pagination or Media Count : 69


Abstract : The use of photoconductors as control mechanisms for electron space currents in image intensifier tubes is discussed. The various approaches to controlling electrons in a vacuum are detailed and a mathematical investigation of each type is given. A figure of merit that is necessary for intensifier tubes of the types described is developed. Means of contract gain enhancement are discussed. The thermalization of hot electrons in thin metal films is extensively discussed as a way of energy filtering for special kinds of transmission grids useful in intensifiers. A new transport equation for epithermal electrons in metals is developed. (Author)


Descriptors :   *IMAGE INTENSIFIERS(ELECTRONICS) , PHOTOELECTRIC MATERIALS , ELECTRONS , ELECTRON BEAMS , SPACE CHARGE , GAIN , CONTROL , DIODES(ELECTRON TUBES) , TRIODES , TUNNELING(ELECTRONICS) , ENERGY


Distribution Statement : APPROVED FOR PUBLIC RELEASE