CC BY
21LD-I-20
High power CW laser heating for the study of materials at very
high temperature
L. Gallais1, G. Kermouche2, M. Minissale3, Y. Pontillon4, M. Richou5, J.L. Rullier6
1-Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, 13013 Marseille, France 2- Mines Saint-Etienne, CNRS, UMR 5307 LGF, Centre SMS, F-42023 Saint-Etienne, France 3- Aix Marseille Univ, CNRS, PIIM, 13007Marseille, France 4- CEA, DES, IRESNE, DEC, Cadarache F-13108 Saint-Paul-Lez-Durance, France 5- CEA, IRFM, F-13108 Saint-Paul-Lez-Durance, France 6- CEA CESTA, 15 Avenue des Sablières, 33114 Le Barp, France
Knowledge of material properties and their changes at high temperature, as well as the behaviour of th materials themselves, is critically important in numerous fields such as nuclear fission, fusion (plasma facing components), aerospace, defense and many industrial processes. For such studies, laser techniques are particularly suitable since they can easily drive materials to extreme temperatures with a very high amount of precision and control. They can be combined with contactless instruments (pyrometry, spectrometry, thermal imaging) to derive the thermophysical properties of materials. In th talk we will discuss on our recent contributions in this field with some studies conducted on Graphite (up to 3800 K) [1], on Uranium dioxide (with generation of complex thermal gradients) [2] and Tungsten (studies of recrystallization kinetics at high temperature) [3].
[1] L. Gallais, T. Vidal, E. Lescoute, Y. Pontillon, J. L. Rullier, 'High power continuous wave laser heating of graphite in a high temperature range up to 3800 K', Journal of Applied Physics 129, 043102 (2021).
[2] T. Vidal, L. Gallais, J. Faucheux, H. Capdevila, J. Sercombe, Y. PoMon, 'Simulation of reactivity initiated accident thermal transients oi nuclear fuels with laser remote heating', Journal of Nuclear Materials 530, 151944 (2020).
[3] M. Minissale, A. Durif, P. Hiret, T. Vidal, J. Faucheux, M. Lenci, M. Mondon, G. Kermou che, Y. Pontillon, C. Grisolia, M. Richou, L. Gallais, 'A high power laser facility to conduct annealing tests at high temperature', Review of Scientific Instruments 91, 035102 (2020).
