Accession Number : AD0435968


Title :   ENHANCED BOMBARDMENT INDUCED CONDUCTIVITY STORAGE TARGET FOR MEMORY TUBES.


Descriptive Note : Interim engineering rept. no. 1, 4 Dec 6331 Mar 64,


Corporate Author : HUGHES RESEARCH LABS MALIBU CALIF


Personal Author(s) : LEHRER,N H


Report Date : 31 Mar 1964


Pagination or Media Count : 29


Abstract : An indication of the stored resolution in the SEBIC film was obtained by an indirect technique, as direct high resolution readout techniques do not yet exist. It was found that with optical input it was possible to store information for many minutes with resolution of thousands of lines per inch. This first measurement of SEBIC resolution confirms previous thinking that the SEBIC layer could store with almost photographic resolution. Electron-beam readout of the SEBIC layer was investigated. To establish a successful technique as a rapidly as possible, the general feasibility of several techniques was experimentally evaluated instead of detailed measurements being taken for each one. To perform these investigations, equipment on hand was improvised for the readout circuitry. After several tests, the storage and readout of information for 30 min and longer was successfully accomplished using a modification of the high energy electron beam technique. With this technique, one defocused electron beam, about 500 V in energy, is used to the potential of one surface of the SEBIC layer. The equilibrium potential over the surface varies with the conductivity of the SEBIC layer, which has been modulated in accordance with the stored information. (Author)


Descriptors :   *THIN FILM STORAGE DEVICES , *STORAGE TUBES , THIN FILM STORAGE DEVICES , RESOLUTION , SCANNING , ELECTRON BEAMS , ELECTRIC TERMINALS , MODULATION , PHOTOCONDUCTIVITY , DIRECT CURRENT , VOLTAGE , MEASURING INSTRUMENTS


Distribution Statement : APPROVED FOR PUBLIC RELEASE