Density functional study of chemical erosion mechanisms in carbon and boron-doped carbon as plasma facing material in tokamaks
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.
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
Record Number: 200317053 / Last updated on: 2003-10-29
Original language: en
Available languages: en