Rare-earth-doped yttria-gadolina ceramic scintillators

Details Rare-earth-doped yttria-gadolina ceramic scintillators Rare-earth-doped yttria-gadolina ceramic scintillators

1986-07-11

1988-05-31

Cooper, Jack

Compositions

Inorganic luminescent compositions

Compositions containing halogen; e.g., halides and oxyhalides

2504831, 501152, C09K 11477

Patent

active

047479736

ABSTRACT:
Rare-earth-doped, polycrystalline yttria-gadolinia ceramic scintillators with high density, optical clarity, uniformity, cubic structure and which are useful in the detection of x-rays, include one or more of the oxides of rare earth elements Eu, Nd, Yb, Dy, Tb, and Pr as activators. The ceramic scintillator may also include CaO, SrO, and Yb.sub.2 O.sub.3 as afterglow reducers. Sintering, sintering combined with gas hot isostatic pressing, and hot pressing methods for preparing the ceramic scintillators are also described.

REFERENCES:
patent: 3322682 (1967-05-01), Thompson
patent: 3666676 (1972-05-01), Rabatin et al.
patent: 3740250 (1973-06-01), Hammond et al.
patent: 3870650 (1975-03-01), Ferri et al.
patent: 4040845 (1977-08-01), Richerson et al.
patent: 4205234 (1980-05-01), Suzuki et al.
patent: 4421671 (1983-12-01), Cusano et al.
Ozawa et al, "Japanese Journal of Applied Physics", vol. 7, No. 11, 1968, pp. 1354-1360.
Nishimura et al, "Chem. Abstracts", vol. 90, 1979, 31984m.
Carnall et al, "Transparent Gd.sub.2 O.sub.3 Ceramics and Phosphors", Corresponds to British Pat. No. 1364008, (8/74).
Buchanan et al, "J. of Applied Phys.", vol. 39, No. 9, 8/68, pp. 4342-4347.
"Controlled Transient Solid Second-Phase Sintering of Yttria", by W. H. Rhodes, GTE Laboratories, Inc., Waltham, Mass., pp. 13-19--Journal of the American Ceramic Society.

Affiliated with

Also associated with

Rating

Rare-earth-doped yttria-gadolina ceramic scintillators does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rare-earth-doped yttria-gadolina ceramic scintillators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rare-earth-doped yttria-gadolina ceramic scintillators will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1873068