Mixed phosphors comprising both Gd.sub.2 O.sub.2 S and GdTaO.sub

Details Mixed phosphors comprising both Gd.sub.2 O.sub.2 S and GdTaO.sub Mixed phosphors comprising both Gd.sub.2 O.sub.2 S and GdTaO.sub

1981-12-30

1984-02-14

Smith, Alfred E.

Radiant energy

Invisible radiation responsive nonelectric signalling

Luminescent device

2504831, 2523014R, 428690, C09K 11475, G01T 100

Patent

active

044319223

ABSTRACT:
An X-ray phosphor comprising a mixture of gadolinium oxysulfide and gadolinium tantalate, activated with trivalent terbium, is employed in X-ray conversion screens to convert X-rays to visible light, mostly in the green region of the spectrum.

REFERENCES:
patent: 3725704 (1973-04-01), Buchanan et al.
patent: 3738856 (1973-06-01), Masi
patent: 3895157 (1975-07-01), Brixner et al.
patent: 4225653 (1980-09-01), Brixner
patent: 4259588 (1981-03-01), Luckey et al.

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