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IRSN, Institut de radioprotection et de sûreté nucléaire

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Enhancing Nuclear Safety


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Isolation and microscopic characterization of nuclear fuel particles from contaminated soil of Chernobyl.

Ahamdach, N; Stammose, D. COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DE LA TERRE ET DES PLANETES, 330: (6) 415-422.

Summary

Nuclear fuel particles were separated from Chernobyl contaminated soil sample by sedimentation in bromoform. Their physicochemical characteristics were studied using the scanning electron microscope. One part of the particles contained U and O and the other part contained U: Zr and O. The size of the particles containing Zr was greater than that of the pure fuel particles. The structure and the surface morphology of the studied particles were variable and characterized the conditions of their formation. Thus, the source term is heterogeneous. This heterogeneity has direct consequences on the dissolution of the fuel particles.

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