Process of preparing tantalate X-ray intensifying phosphors with

Details Process of preparing tantalate X-ray intensifying phosphors with Process of preparing tantalate X-ray intensifying phosphors with

1990-12-17

1991-11-12

Seidleck, James J.

Stock material or miscellaneous articles

Composite

Of inorganic material

2523014H, 2523014R, 2504831, G03C 517, G21K 400

Patent

active

050647296

ABSTRACT:
A process for preparing X-ray intensifying M' monoclinic tantalate phosphors by firing precursor oxides in a novel flux mixture containing a compound capable of producing an alkali metal oxide and an effective amount of an alkali metal metasilicate. Tantalate phosphors made in this manner have improved efficiency and purity. X-ray intensifying screens made from these phosphors have improved speed and can be used with good results with a plurality of X-ray film elements.

REFERENCES:
patent: 3650975 (1972-03-01), Yale
patent: 4225653 (1980-09-01), Brixner

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