Nuclear microprobe applications to radioactive waste management basic research

Patrick M. Trocellier, V. Badillo, Nicole Barré, Laurence Bois, C. Cachoir, Jean Paul Gallien, Séverine Guilbert, Florence Mercier-Bion, Christophe Tiffreau

    Research outputpeer-review

    Abstract

    Radioactive waste management is one of the major technical and scientific challenge to be solved by industrialized countries near the beginning of the 21st century. Relevant questions arise about the extrapolation of the long term-behavior of materials from waste package, engineered barriers and near field repository. Whatever the strategical option might be, wet atmosphere or water intrusion through the different barriers constitute the two main remobilization factors for radionuclides in the geosphere and the biosphere. The study of solid alteration processes and elemental sorption phenomena on mineral surfaces is one of the most efficient basic research approaches to assess the long term performance of waste materials. Ion beam analysis and more recently nuclear microprobe techniques have been applied to investigate exchange mechanisms near representative solid/liquid interfaces such as glass/deionized water, uranium dioxide/granitic or clay water or mineral surface/aqueous solution doped with chemical elements analogue to actinide or fission products. This paper intends to describe the different works that have been carried out in Saclay using the nuclear microprobe facility. The coupling of μRBS, μPIXE and μNRA permits to determine the evolution of the surface composition induced by chemical reactions involved. Complementary observation of solid morphology and solution analysis allows to obtain a complete elemental balance on exchange processes.

    Original languageEnglish
    Pages (from-to)511-516
    Number of pages6
    JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
    Volume158
    Issue number1
    DOIs
    StatePublished - 2 Sep 1999
    Event1998 - ICNMTA: 6th International Conference on Nuclear Microprobe Technology and Applications - Cape Town
    Duration: 11 Oct 199816 Oct 1998

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics
    • Instrumentation

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