X-ray phosphor composition and x-ray intensifying screen employi

Details X-ray phosphor composition and x-ray intensifying screen employi X-ray phosphor composition and x-ray intensifying screen employi

1975-10-23

1977-10-18

Cooper, Jack

Radiant energy

Invisible radiation responsive nonelectric signalling

Luminescent device

250483, 2523014H, 2523015, 428539, G01T 120, C09K 1146, C09K 1138

Patent

active

040547990

ABSTRACT:
A mixture of from 5% to 95% by weight of calcium tungstate and from 5% to 95% of europium activated barium fluorochloride exhibits brightness and x-ray absorption characteristics superior to that which would be predicted from the foregoing properties of the individual phosphors. Intensifying screens employing the above mixtures have a speed in excess of the commercially available intensifying screens using the present calcium tungstate x-ray phosphors.

REFERENCES:
patent: 1602593 (1926-10-01), Sheppard
patent: 2904689 (1959-09-01), Masi et al.
patent: 3023313 (1962-02-01), La Mater et al.
patent: 3668143 (1972-06-01), Luckey

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