Abstract
The aim of this work is to characterise the retention properties of apatites, studied as potential inert matrices, towards the long-lived fission product 99Tc ( T=210 000 years) in radioactive waste disposal. The study was made using two stable homologous elements of Tc: molybdenum which has the same mass as technetium, and rhenium which is the chemical analogue of Tc. These elements were introduced in apatite samples by ion implantation and their profiles were determined by Rutherford backscattering spectroscopy (RBS). The coupling of X-ray photoelectron spectroscopy (XPS) and X-ray absorption near-edge spectroscopy (XANES) analysis showed the oxidation of molybdenum and rhenium during annealing. Using these results on Mo and Re behaviour, assumptions were made on the migration of technetium.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
