RESEARCH INVESTIGATIONS ON SMOOTHING ELECTRON MULTIPLIER FOR ELECTRONIC-SCANNED IMAGE TUBE.
Abstract
The object is to improve the signal-to-noise ratio obtainable in an image dissector type camera tube. The desired performance specifications are given below as a direct excerpt from the proposal request. The smoothing principle has been demonstrated experimentally and good agreement between the theoretical analysis and experiment has been found. The smoothing feature has been demonstrated using a phosphor-photocathode smoothing element. Both periodic and random electron pulses have been applied to the phosphor-photocathode sandwich. This was done by feeding periodic voltage pulses from a conventional electronic pulse generator or random pulses generated in a multiplier phototube to the grid of a CRT containing the phosphor element of the sandwich. Photographs of the scope display showing the output improvements of the phosphor-photocathode smoothing sandwich were made. Extensive measurements of the noise voltage preceding and following the smoothing device were also made in order to compare theory and experiments. The agreement of these experimental results with theory are felt to be very good.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 05, 1965
- Accession Number
- AD0630711
Entities
People
- James L. Gumnick
- R. A. Harber