Conditions Extrêmes et Matériaux : Haute Température et Irradiation

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G.Guimbretière, A.Canizarès, N.Raimboux, J.Joseph, P.Desgardin, L.Desgranges, C.Jegou, P.Simon, 'High temperature Raman study of UO2: A possible tool for in situ estimation of irradiation-induced heating', J. Raman Spectrosc. 46 418-420 (2015) doi:10.1002/jrs.4661

Recently, in situ Raman setups under irradiation become available and uranium dioxide is one of the most studied compounds. This paper reports the temperature dependence of the only Raman active mode in fluorine UO2. Besides the interest in terms of phonon anharmonicity knowledge, this can be used to estimate the heating induced by irradiation: The frequency shift and width of the T2g peak can be used as an internal indirect probe of the local temperature in the 20 – 590 °C range.