High Temperature X-ray Diffraction Study of the Oxidation Products and Kinetics of Uranium–Plutonium Mixed Oxides

2014 ◽  
Vol 53 (24) ◽  
pp. 12757-12766 ◽  
Author(s):  
Michal Strach ◽  
Renaud C. Belin ◽  
Jean-Christophe Richaud ◽  
Jacques Rogez
Keyword(s):  
High Temperature ◽  
Diffraction Study ◽  
Mixed Oxides ◽  
Oxidation Products ◽  
X Ray Diffraction ◽  
X Ray ◽  
Uranium Plutonium ◽  
Kinetics Of

In situ high temperature X-ray diffraction study of the kinetics of phase separation in the uranium-plutonium mixed oxide (U0.55Pu0.45)O2-x

2014 ◽  
Vol 1645 ◽  
Author(s):  
Romain VAUCHY ◽  
Renaud.C. BELIN ◽  
Anne-Charlotte ROBISSON ◽  
Fiqiri HODAJ
Keyword(s):  
Phase Separation ◽  
Room Temperature ◽  
Mixed Oxides ◽  
Oxygen Stoichiometry ◽  
X Ray Diffraction ◽  
Fundamental Interest ◽  
X Ray ◽  
Uranium Plutonium ◽  
Kinetics Of

ABSTRACTUranium-plutonium mixed oxides incorporating high amounts of plutonium are considered for future nuclear reactors. For plutonium content higher than 20%, a phase separation occurs, depending on the temperature and on the oxygen stoichiometry. This phase separation phenomenon is still not precisely described, especially at high plutonium content. Here, using an original in situ fast X-ray diffraction device dedicated to radioactive materials, we evidenced a phase separation occurring during rapid cooling from 1773 K to room temperature at the rate of 0.05 and 2 K per second for a (U0.55Pu0.45)O2-x compound under a reducing atmosphere. The results show that the cooling rate does not impact the lattice parameters of the obtained phases at room temperature but their fraction. In addition to their obvious fundamental interest, these results are of utmost importance in the prospect of using uranium-plutonium mixed oxides with high plutonium content as nuclear fuels.

Synchrotron x-ray diffraction study of the crystallisation kinetics of silica glass at high pressure and high temperature

2002 ◽  
Vol 34 (2) ◽  
pp. 243-250 ◽  
Author(s):  
Kaichi Suito ◽  
Makoto Miyoshi ◽  
Akifuma Onodera ◽  
Osamu Shimomura ◽  
Takumi Kikegawa
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Diffraction Study ◽  
Silica Glass ◽  
X Ray Diffraction ◽  
Crystallisation Kinetics ◽  
X Ray ◽  
Kinetics Of

ChemInform Abstract: High-Temperature X-Ray Diffraction Study of Uranium-Neptunium Mixed Oxides.

ChemInform ◽  
2013 ◽  
Vol 44 (22) ◽  
pp. no-no
Author(s):  
Melanie Chollet ◽  
Renaud C. Belin ◽  
Jean-Christophe Richaud ◽  
Muriel Reynaud ◽  
Frederic Adenot
Keyword(s):  
High Temperature ◽  
Diffraction Study ◽  
Mixed Oxides ◽  
X Ray Diffraction ◽  
X Ray

High-Temperature X-ray Diffraction Study of Uranium–Neptunium Mixed Oxides

2013 ◽  
Vol 52 (5) ◽  
pp. 2519-2525 ◽  
Author(s):  
Mélanie Chollet ◽  
Renaud C. Belin ◽  
Jean-Christophe Richaud ◽  
Muriel Reynaud ◽  
Frédéric Adenot
Keyword(s):  
High Temperature ◽  
Diffraction Study ◽  
Mixed Oxides ◽  
X Ray Diffraction ◽  
X Ray

scholarly journals High-temperature X-ray diffraction study of the melting sequence of the 2223 phase in the Bi–Sr–Ca–Cu–O system

1996 ◽  
Vol 52 (a1) ◽  
pp. C399-C399
Author(s):  
C. Park ◽  
W. Wong-Ng ◽  
L. P. Cook ◽  
R. L. Snyder ◽  
P. V. P. S. S. Sastry ◽  
...  
Keyword(s):  
High Temperature ◽  
Diffraction Study ◽  
X Ray Diffraction ◽  
X Ray

In situ high-temperature X-ray diffraction study of phase transformations in silver behenate

2005 ◽  
Vol 20 (02) ◽  
pp. 94-96 ◽  
Author(s):  
Thomas N. Blanton ◽  
Swavek Zdzieszynski ◽  
Michael Nicholas ◽  
Scott Misture
Keyword(s):  
High Temperature ◽  
Phase Transformations ◽  
Diffraction Study ◽  
X Ray Diffraction ◽  
X Ray
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