X-ray intensifying screen including a titanium activated hafnium

Details X-ray intensifying screen including a titanium activated hafnium X-ray intensifying screen including a titanium activated hafnium

1989-11-16

1990-10-30

Cooper, Jack

Radiant energy

Invisible radiation responsive nonelectric signalling

Luminescent device

2523014F, 428690, C09K 1167

Patent

active

049670875

ABSTRACT:
An intensifying screen is disclosed containing a phosphor composition comprised of monoclinic crystals of a titanium activated hafnia phosphor host containing ytterbium ions to reduce afterglow. A phosphor composition in which zirconia is at least partially substituted for hafnia is also disclosed.

REFERENCES:
patent: 3974389 (1976-08-01), Ferri et al.
patent: 4014812 (1977-03-01), Kelsey et al.
patent: 4054798 (1977-10-01), Watanabe et al.
patent: 4070583 (1978-01-01), Rabatin
McCauley et al., "J. of Lumin" 6, (1973) pp. 105-115.

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