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|Title:||Revisiting the melting temperature of NpO2 and the challenges associated with high temperature actinide compound measurements|
|Authors:||BÖHLER ROBERT; WELLAND Mike; DE BRUYCKER Franck; BOBORIDIS Konstantinos; JANSSEN ARNE; ELOIRDI Rachel; KONINGS Rudy; MANARA Dario|
|Citation:||JOURNAL OF APPLIED PHYSICS vol. 111 no. 11 p. 113501 1-8|
|Publisher:||AMER INST PHYSICS|
|Type:||Articles in periodicals and books|
|Abstract:||Many refractory oxides display very high oxygen potential at temperatures close to melting (around 3000 K), ), i.e. a tendency to exchange oxygen with their environment and chemically react with it. Among others, this has been shown to be particularly true for a few actinide dioxides (e.g.: UO2, PuO2) extensively used as components of nuclear fuel. The high chemical reactivity of these materials constitutes a further safety issue in the unlikely event of uncontrolled thermal excursion in a nuclear plant. The behaviour of these oxides at temperatures approaching melting in oxidizing or reducing conditions is therefore of great interest not only from a basic materials research viewpoint, but also for the ultimate sake of nuclear reactor safety. (The rest is found in the attached file. Otherwise Pubsy gives an error message)|
|JRC Directorate:||Nuclear Safety and Security|
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