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Irradiation effects of swift heavy ions in actinide oxides and actinide nitrides: Structure and optical properties by Michel Beauvy; Chrystelle Dalmasso; Philibert Iacconi is a scholarly article available to read on EtoBox.

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Actinide oxides have been used as nuclear fuels in the majority of power reactors working in the world and actinide nitrides are under investigation for the fuels of the future fast neutron fission reactors developed in Forum Generation IV. Radiation damage in actinide oxides UO 2 , (U 0.92 Ce 0.08 )O 2 , and actinide nitride UN has been characterized after irradiation with swift heavy ions. Fluences up to 3 • 10 13 ions/cm 2 of heavy ions (Kr 740 Mev, Cd 1 GeV) available at the CIRIL/GANIL facility were used to simulate irradiation in reactors by fission products and by neutrons. The macroscopic effects of irradiation remains very weak compared with those seen in other ceramic oxides irradiated in the same conditions: practically no swelling can be measured and no change in colour can be observed on the irradiated part of a polished face of sintered disks. The point defects in irradiated actinide compounds have been characterized by optical absorption spectroscopy in the UV-Vis-NIR wavelength range. The absorption spectra before and after irradiation are compared, and unexpected stability of optical properties during irradiation is shown. This result confirms the low rate of forma

Author

Michel Beauvy; Chrystelle Dalmasso; Philibert Iacconi

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0168-583X)

Published

2006

Language

EN