Phosphor composition and X-ray intensifying screen exhibiting pe

Details Phosphor composition and X-ray intensifying screen exhibiting pe Phosphor composition and X-ray intensifying screen exhibiting pe

1992-01-17

1992-12-22

Cooper, Jack

Radiant energy

Invisible radiation responsive nonelectric signalling

Luminescent device

2523014F, 428690, C09K 1167

Patent

active

051736110

ABSTRACT:
A phosphor composition is disclosed containing a titanium free hafnium zirconium germanate phosphor which emits electromagnetic radiation principally in the spectral region to which silver halide exhibits native sensitivity. To maximize the intensity of emission the ratio of host metals satisifies the relationship:

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Labbe "Chem. Abstracts" vol. 64, 1966, 12173f.
Research Disclosure, vol. 184, Aug. 1979, Item 18431.
James The Theory of the Photographic Process, 4th Ed., Macmillan, New York, 1977, Fig. 1.16, p. 39.
L. H. Brixner, "Structural and Luminescent Properties of the Ln.sub.2 Hf.sub.2 O.sub.7 -Type Rare Earth Hafnates", Mat. Res. Bull. vol. 19, pp. 143-149, 1984.

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