Photoelectron Pumped Phosphors,
Abstract
The reported investigation of cathodophosphors was undertaken in connection with the development of optical devices for the detection of long wavelength photons in which the initial photon-to-electron detection is performed by an optical diode, then the photoelectrons being accelerated by the electric field penetrate into a phosphor screen and the screen produces multiple photons which are detected by a (close coupled) photomultiplier. This report presents the results of a comprehensive analysis and systematization of the data relevant to the fast and very fast commercially available phosphors and developmental works on improved materials and processes in the field of phosphors, especially cathodophosphors. The investigation included analysis of II-VI phosphors, alkaline-earth chalcogenides, silicates, garnets, halides, and some ternary compounds with diamond-like crystal structure. The investigation included, also, analysis of data regarding the activators and coactivators as well as mixtures of phosphors with optically transparent conductive powders for the low-energy-electron cathodophosphors. The report includes the tables and diagrams with the phosphors' parameters, namely, their chemical composition, brightness and its drop rate, cathodoluminescence efficiency, and persistence. (jhd)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1989
- Accession Number
- ADA213202
Entities
Organizations
- University of California, San Diego