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The New Uranium Mining BoomDirect and Indirect Effects of Uranium on Microstructure of Sedimentary Phosphate: Fission Tracks and Radon Diffusion

The New Uranium Mining Boom: Direct and Indirect Effects of Uranium on Microstructure of... [Moroccan sedimentary phosphates are essentially constituted by apatite and contain some tens ppm of uranium. This uranium undergoes spontaneous fission and radioactive decay in chain, since its geological formation. The spontaneous fission causes the radiation damage in the structure, by recoil of the fission products, whereas the radioactive decay products various radioactive daughters, where one of them is gas; Radon. This radioactive gas causes microstructure defects (nanopores) by diffusion. The present abstract focuses on the exam of the micro/nanostructure due to these two phenomena. The fission tracks of several grains of phosphate are studied by microscopy observations, whereas the radon emanation is analyzed by gamma spectrometry analysis of bulk of phosphate. Some interesting and correlated results are obtained.] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

The New Uranium Mining BoomDirect and Indirect Effects of Uranium on Microstructure of Sedimentary Phosphate: Fission Tracks and Radon Diffusion

Part of the Springer Geology Book Series
Editors: Merkel, Broder; Schipek, Mandy
The New Uranium Mining Boom — Jan 1, 2012

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References (6)

Publisher
Springer Berlin Heidelberg
Copyright
© Springer Verlag Berlin Heidelberg 2012
ISBN
978-3-642-22121-7
Pages
743 –748
DOI
10.1007/978-3-642-22122-4_84
Publisher site
See Chapter on Publisher Site

Abstract

[Moroccan sedimentary phosphates are essentially constituted by apatite and contain some tens ppm of uranium. This uranium undergoes spontaneous fission and radioactive decay in chain, since its geological formation. The spontaneous fission causes the radiation damage in the structure, by recoil of the fission products, whereas the radioactive decay products various radioactive daughters, where one of them is gas; Radon. This radioactive gas causes microstructure defects (nanopores) by diffusion. The present abstract focuses on the exam of the micro/nanostructure due to these two phenomena. The fission tracks of several grains of phosphate are studied by microscopy observations, whereas the radon emanation is analyzed by gamma spectrometry analysis of bulk of phosphate. Some interesting and correlated results are obtained.]

Published: Jan 1, 2012

Keywords: Fission Track; Spontaneous Fission; Radon Activity; Radon Emanation; Apatite Fission Track Analysis

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