Compositions – Organic luminescent material containing compositions – Scintillating or lasing compositions
Patent
1978-03-09
1980-09-23
Padgett, Benjamin R.
Compositions
Organic luminescent material containing compositions
Scintillating or lasing compositions
65 30E, 65 31, 65 32, 106 52, G21F 916
Patent
active
042241774
ABSTRACT:
This invention relates to radioactive materials which are fixed, stored, entrapped, encapsulated, or otherwise rendered immobile in a glass matrix for extremely long periods of time. Radioactive material such as radioactive wastes are incorporated into a glass matrix by a process of "molecular stuffing" a porous glass either with a radioactive gas which is trapped in the porous glass by dissolution during sintering of the pores of the glass, or with a salt solution containing radioactive material such as CsNO.sub.3, Sr(NO.sub.3), etc., or with a combination of both salt solution and radioactive gas, followed by drying and sintering of the pores of the glass whereby these radioactive materials upon chemical change to their oxides, excepting of course the noble gases which remain in molecular form, become a part of the integrated glass structure.
The resulting glass article may have the radioactive material dispersed essentially homogeneously throughout the glass article, or there may be a layer free of such radioactive waste material over the entire surface of the glass article. In either case such glass articles demonstrate an extremely slow diffusion of the encapsulated radioactive material to the surrounding area.
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Sanyal, A. S. et al., "Fixation of High Level Atomic Waste in Glass for Ultimate Disposal", J. Scient. Ind. Res., vol. 33, No. 9, pp. 436-460, Sep. 1974.
Litovitz Theodore A.
Macedo Pedro B.
Simmons Joseph H.
Kyle Deborah L.
Litovitz Theodore A.
Macedo Pedro B.
Padgett Benjamin R.
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