Phosphor materials for radiation intensifying screens and radiat

Details Phosphor materials for radiation intensifying screens and radiat Phosphor materials for radiation intensifying screens and radiat

1987-10-01

1989-05-09

Howell, Janice A.

Radiant energy

Invisible radiation responsive nonelectric signalling

Luminescent device

2523014H, 2523015, 428690, 428691, G01T 2164, H01J 170

Patent

active

048291889

ABSTRACT:
A phosphor material for a radiation intensifying screen includes phosphor particles which emit light upon radiation excitation, and alkaline-earth metal fluoride. The alkaline-earth metal fluoride is formed in situ on the surface of the phosphor particles through a reaction of a first reactant containing the alkaline-earth metal with a second reactant containing the fluoride to improve the dispersibility of the phosphor particles. The phosphor material is dispersed in a binder and coated on a base support as a phosphor layer to provide a radiation intensifying screen.

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