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Abstract

Quantum calculations (density functional theory) have been developed in order to propose a new insight into the chemical erosion of pure and doped graphite considered as models for the various carbon materials cladding the first wall of magnetically controlled fusion devices. The elementary processes considered are H, C and CHn adsorption and desorption, and C, C(2), CH, CCHn extraction from the surface. The quantum results are compared to experiments through tentative new interpretations of the high-resolution electron energy loss spectroscopy vibration spectra, of the thermal desorption spectroscopy experiments and of the analytical models proposed for chemical erosion.

Additional information

Authors: FERRO Y, Physique des Interactions Ioniques et Moléculaires, CNRS and Université de Provence (UMR 6633), Campus Universitaire de Saint Jérôme, Marseille (FR);MARINELLI F, Physique des Interactions Ioniques et Moléculaires, CNRS and Université de Provence (UMR 6633), Campus Universitaire de Saint Jérôme, Marseille (FR);ALLOUCHE A, Physique des Interactions Ioniques et Moléculaires, CNRS and Université de Provence (UMR 6633), Campus Universitaire de Saint Jérôme, Marseille (FR);BROSSET C, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: An article published in: Journal of Nuclear Materials, Volume 321, Issues 2-3, 15 September 2003, Pages 294-304
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://dx.doi.org/10.1016/S0022-3115%2803%2900295-2
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