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An integrated model for materials in a fusion power plant: transmutation, gas production, and helium embrittlement under neutron irradiation

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This study presents an integrated computational framework combining neutron-transport calculations (MCNP), material inventory burn-up modeling (FISPACT), and electronic-structure density functional theory (DFT) to evaluate material degradation in the DEMO fusion reactor. It investigates spatial variations of neutron spectra, gas production (helium and hydrogen), and atomic displacements across structural and plasma-facing components. A simple physics-based model is used to predict critical helium-induced grain-boundary embrittlement lifetimes for candidate fusion materials including iron, tungsten, and beryllium.
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IOPscience iopscience.iop.org Home Search Collections Journals About Contact us My IOPscience An integrated model for materials in a fusion power plant: transmutation, gas production, and helium embrittlement under neutron irradiation This article has been downloaded from IOPscience. Please scroll down to see the full text article. 2012 Nucl. Fusion 52 083019 (http://iopscience.iop.org/0029-5515/52/8/083019) View the table of contents for this issue, or go to the journal homepage for more Download details: IP Address: 193.52.216.130 The article was downloaded on 13/11/2012 at 13:27 Please note that terms and conditions apply.

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This study presents an integrated computational framework combining neutron-transport calculations (MCNP), material inventory burn-up modeling (FISPACT), and electronic-structure density functional theory (DFT) to evaluate material degradation in the DEMO fusion reactor. It investigates spatial vari...