Accession Number : AD0689473

Title :   3200 ANGSTROM PHOSPHOR.

Descriptive Note : Quarterly rept. no. 3, 1 Jan-31 Mar 69,

Corporate Author : WESTINGHOUSE ELECTRIC CORP BALTIMORE MD AEROSPACE DIV

Personal Author(s) : Ogland,Jon W. ; Marlarkey,Edward C. ; Natale,Michael R.

Report Date : JUN 1969

Pagination or Media Count : 32

Abstract : The objective of the contract is to conduct a research and development program leading to the production of a cathodoluminescent phosphor which emits with high efficiency in the spectral region around 3200 A. The phosphor is to be incorporated into very high resolution cathode-ray tubes with fiber optic faceplates for data recording on UV sensitive, dry-process film. Primary emphasis during this period was given to the development of Zn2SiO4:TiO2 for the purpose of producing a phosphor to replace P-16 in tubes designed to emit at 3800 A. The best sample prepared gave an efficiency twice that of P-16 at high excitation densities, showed a maintenance two to three orders of magnitude better than P-16, and had a radiative decay time of 3.8 microsec. Efficiency and maintenance measurements were made on the best samples of beta-CaSiO3:Pb and BaSi2O5:Pb. A considerable effort was expended in attempts to prepare luminescent thallium-doped BaSi2O5 without success; a change in furnace design is expected to alter this situation in the next period. A preliminary sample of BaZnSi4O10:Pb has been prepared and found to emit at 3250 A. (Author)

Descriptors :   (*CATHODE RAY TUBE SCREENS, PHOSPHORESCENT MATERIALS), (*PHOSPHORESCENT MATERIALS, ULTRAVIOLET RADIATION), FIBER OPTICS, PHOTOGRAPHIC MATERIALS, ZINC COMPOUNDS, SILICATES, CALCIUM COMPOUNDS, BARIUM COMPOUNDS, DOPING, TITANIUM COMPOUNDS, DIOXIDES, LEAD(METAL), LUMINESCENCE

Subject Categories : Electrooptical and Optoelectronic Devices
      Miscellaneous Materials
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE