2024-03-29T13:03:47Zhttps://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/426132021-06-24T07:32:34Zcom_10324_36327com_10324_954com_10324_894com_10324_1159com_10324_931col_10324_36329col_10324_1310
First principles study of liquid uranium at temperatures up to 2050 K
González del Río, Beatriz
González Tesedo, Luis Enrique
González Fernández, David José
Producción Científica
Uranium compounds are used as fissile materials in nuclear reactors. In present day reactors the most used nuclear fuel is uranium dioxide, but in generation-IV reactors other compounds are also being considered, such as uranium carbide and uranium mononitride. Upon possible accidents where the coolant would not circulate or be lost the core of the reactor would reach very high temperatures, and therefore it is essential to understand the behaviour of the nuclear fuel under such conditions for proper risk assessment. We consider here molten metallic uranium at several temperatures ranging from 1455 to 2050 K. Even though metallic uranium is not a candidate for nuclear fuel it could nevertheless be produced due to the thermochemical instability of uranium nitride at high temperatures. We use first principles techniques to analyse the behaviour of this system and obtain basic structural and dynamic properties, as well as some thermodynamic and transport properties, including atomic diffusion and viscosity.
2020-09-28T12:03:24Z
2020-09-28T12:03:24Z
2020
info:eu-repo/semantics/article
Journal of Physics: Condensed Matter, 2020, Volume 32, Number 30
0953-8984
http://uvadoc.uva.es/handle/10324/42613
10.1088/1361-648X/ab7f6f
304001
30
Journal of Physics: Condensed Matter
32
1361-648X
eng
https://iopscience.iop.org/article/10.1088/1361-648X/ab7f6f/meta
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
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