Helium apparent diffusion coefficient and trapping mechanisms in implanted B4C boron carbide
نویسندگان
چکیده
منابع مشابه
Acinar determinants of the apparent diffusion coefficient for helium-3.
The apparent diffusion coefficient (ADC) obtained by helium-3 magnetic resonance imaging over several seconds is thought to reflect diffusion impairment due to both intra- and interacinar structure. In this study, numerical simulations of intra-acinar gas mixing and effective diffusion were performed in a multiple-branch-point model of the human acinus. Using a previously described method, we c...
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Density functional theory is demonstrated to reproduce the 13C and 11B NMR chemical shifts of icosahedral boron carbides with sufficient accuracy to extract previously unresolved structural information from experimental NMR spectra. B4C can be viewed as an arrangement of 3-atom linear chains and 12-atom icosahedra. According to our results, all the chains have a CBC structure. Most of the icosa...
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ژورنال
عنوان ژورنال: Journal of Nuclear Materials
سال: 2019
ISSN: 0022-3115
DOI: 10.1016/j.jnucmat.2019.02.012