Radiation Effects on Clay Minerals
作者： T. Allard , E. Balan , G. Calas
DOI: 10.1016/B978-0-08-098258-8.00004-3
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摘要: Abstract Radiation-induced point defects have been discovered in several clay minerals such as kaolinite, dickite, montmorillonite, illite, and sudoite, using electron paramagnetic resonance spectroscopy. Besides, amorphization of smectites could be produced by or heavy ion irradiation with different cumulative doses. Two main applications are derived: (i) The tracing past radioactivity defects. In geological systems where the age can constrained, one quantitatively reconstruct ancient migrations radioelements. closed dose rate assumed constant over time, used to date populations from tropical soils. (ii) impact on physico-chemical properties. a worst case scenario leakage transuranic elements high-level nuclear waste repository, alpha recoil nuclei may amorphize smectite after periods order 1000 years. Moreover, radiation-induced significantly enhances its dissolution kinetics.
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