Consequences of external irradiation on the chemical durability of the β-thorium phosphate-diphosphate during leaching tests

C. Tamain; A. Özgümüs; N. Dacheux; F. Garrido; L. Thomé; C. Corbel; E. Mendès

doi:10.1007/s10967-007-0917-3

Consequences of external irradiation on the chemical durability of the β-thorium phosphate-diphosphate during leaching tests

C. Tamain
, A. Özgümüs
, N. Dacheux
, F. Garrido
, L. Thomé
, C. Corbel
, E. Mendès

Research output: Contribution to journal › Article › peer-review

Abstract

The effect of external irradiation on β-thorium phosphate-diphosphate (tetravalent actini des bearing storage matrix) and the influence on its dissolution in aqueous media were studied. Highly energetic heavy ions were used to get the amorphization of the crystalline structure of the ceramic. The ex-situ dissolution expenments showed an increase of the dissolution versus amorphous fraction in several pH and temperature conditions. The in-situ dissolution experiments highlighted the primordial importance of radiolytic produced free radical species. From these results, the ceramic presents a good resistance to aqueous alteration even in amorphous state.

Original language	English
Pages (from-to)	597-601
Number of pages	5
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume	273
Issue number	3
DOIs	https://doi.org/10.1007/s10967-007-0917-3
Publication status	Published - 1 Jan 2007

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10.1007/s10967-007-0917-3

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abstract = "The effect of external irradiation on β-thorium phosphate-diphosphate (tetravalent actini des bearing storage matrix) and the influence on its dissolution in aqueous media were studied. Highly energetic heavy ions were used to get the amorphization of the crystalline structure of the ceramic. The ex-situ dissolution expenments showed an increase of the dissolution versus amorphous fraction in several pH and temperature conditions. The in-situ dissolution experiments highlighted the primordial importance of radiolytic produced free radical species. From these results, the ceramic presents a good resistance to aqueous alteration even in amorphous state.",

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AU - Tamain, C.

AU - Özgümüs, A.

AU - Dacheux, N.

AU - Garrido, F.

AU - Thomé, L.

AU - Corbel, C.

AU - Mendès, E.

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AB - The effect of external irradiation on β-thorium phosphate-diphosphate (tetravalent actini des bearing storage matrix) and the influence on its dissolution in aqueous media were studied. Highly energetic heavy ions were used to get the amorphization of the crystalline structure of the ceramic. The ex-situ dissolution expenments showed an increase of the dissolution versus amorphous fraction in several pH and temperature conditions. The in-situ dissolution experiments highlighted the primordial importance of radiolytic produced free radical species. From these results, the ceramic presents a good resistance to aqueous alteration even in amorphous state.

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ER -

Consequences of external irradiation on the chemical durability of the β-thorium phosphate-diphosphate during leaching tests

Abstract

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