Please use this identifier to cite or link to this item:
|Title:||Local and Electronic Structure of Americium-Bearing PuO2|
|Authors:||PRIEUR DAMIEN; CARVAJAL NUNEZ URSULA; VITOVA T.; SOMERS Joseph|
|Citation:||EUROPEAN JOURNAL OF INORGANIC CHEMISTRY vol. 2013 no. 9 p. 1518-1524|
|Type:||Articles in periodicals and books|
|Abstract:||X-ray Diffraction and X-ray Absorption Spectroscopy have shown that a material composed of two (Pu,Am)O2-x substoichiometric fluorite-type structures is obtained by sintering in moisturized Ar-H2. The Pu oxidation state is, surprisingly, strictly (+IV) while Am exhibits a (+III/+IV) mixed valence. Thus, the Am-O system and particularly the Am oxidation state play a major role in the sintering behavior of the Pu-Am-O system. The heating of this compound in air leads to the formation of a fluorite Pu0.80Am0.20O1.98 solid solution. The transition from one phase to two phase structure takes place in a temperature inferior to 800°C. The results were compared with previous studies on Am bearing UO2 and ThO2 which have evidenced different behaviors.|
|JRC Directorate:||Nuclear Safety and Security|
Files in This Item:
There are no files associated with this item.
Items in repository are protected by copyright, with all rights reserved, unless otherwise indicated.