| Numéro |
J. Phys. Colloques
Volume 47, Numéro C8, Décembre 1986
EXAFS and Near Edge Structure IV
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|---|---|---|
| Page(s) | C8-879 - C8-882 | |
| DOI | https://doi.org/10.1051/jphyscol:19868170 | |
EXAFS and Near Edge Structure IV
J. Phys. Colloques 47 (1986) C8-879-C8-882
DOI: 10.1051/jphyscol:19868170
1 Physics Division, Joint Research Centre Euratom, I-21020 Ispra, (VA), Italy
2 GNSM and Physics Department, University of Modena, Via Campi 213/A, 1-41100 Modena, Italy
3 SERC Daresbury Laboratory, GB-Warrington WA4 4AD, Great-Britain
4 Department of Applied Physics, University of Strathclyde, GB-Glasgow G1 1XL, Great-Britain
J. Phys. Colloques 47 (1986) C8-879-C8-882
DOI: 10.1051/jphyscol:19868170
GRAZING INCIDENCE FLUORESCENCE EXAFS AND NEAR EDGE SPECTROSCOPY FOR CORRODED GLASS SURFACES
N.T. BARRETT1, G.M. ANTONINI2, G.N. GREAVES3, F.R. THORNLEY4 et A. MANARA11 Physics Division, Joint Research Centre Euratom, I-21020 Ispra, (VA), Italy
2 GNSM and Physics Department, University of Modena, Via Campi 213/A, 1-41100 Modena, Italy
3 SERC Daresbury Laboratory, GB-Warrington WA4 4AD, Great-Britain
4 Department of Applied Physics, University of Strathclyde, GB-Glasgow G1 1XL, Great-Britain
Abstract
EXAFS at grazing incidence with fluorescence detection has been used to investigate the local atomic structure around uranium at the surface of borosilicate glasses. Structural changes have been observed as a result of leaching in water at 100°C. These indicate that uranium migrates to the surface to form island structures in a surface layer which, subsequently, peels off to reveal fresh surface for further corrosion.