X-Ray image converters utilizing rare earth admixtures

Details X-Ray image converters utilizing rare earth admixtures X-Ray image converters utilizing rare earth admixtures

1980-08-25

1982-02-16

Dixon, Harold A.

Radiant energy

Invisible radiation responsive nonelectric signalling

Luminescent device

250460, 2504751, 2523014P, 2523014H, G01J 158

Patent

active

043160921

ABSTRACT:
Various rare earth phosphor admixtures are described utilizing thulium-activated oxyhalides of lanthanum and/or gadolinium to provide improved performance in x-ray image converter devices. These phosphor admixtures are used in radiographic screens in combination with either blue sensitive or green sensitive photographic film.

REFERENCES:
patent: 3795814 (1974-03-01), Rabatin
patent: 4070583 (1978-01-01), Rabatin
patent: 4130428 (1978-12-01), Van Doorselaer

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