Terbium-activated gadolinium oxysulfide X-ray phosphor

Details Terbium-activated gadolinium oxysulfide X-ray phosphor Terbium-activated gadolinium oxysulfide X-ray phosphor

1980-06-13

1985-03-26

Anderson, Bruce C.

Radiant energy

Invisible radiation responsive nonelectric signalling

Luminescent device

2504861, H01J 162

Patent

active

045075603

ABSTRACT:
An improved (Gd.sub.1-x Tb.sub.x).sub.2 O.sub.2 S X-ray phosphor, wherein x is from 0.0003 to 0.0045, and persistence causing impurity ions are kept below 5 ppm, exhibits increased brightness in the blue region of the spectrum, while exhibiting acceptably low persistence for X-ray intensifying screen applications.

REFERENCES:
patent: 3872309 (1975-03-01), De Belder et al.
patent: 3883747 (1975-05-01), Murashige et al.
patent: 4090085 (1978-05-01), Shimiya et al.

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