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Determining misorientation of graphite grains from the angular dependence of X-ray emission spectra |
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| Authors: | V V Belavin A V Okotrub L G Bulusheva A S Kotosonov D V Vyalykh S L Molodtsov |
| Institution: | (1) Nikolaev Institute of Inorganic Chemistry, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090, Russia;(2) NIIGrafit, Moscow, 111524, Russia;(3) Institute of Solid State Physics, Dresden University of Technology, D-01062 Dresden, Germany;(4) Institute of Physics, St. Petersburg State University, St. Petersburg, 198904, Russia |
| Abstract: | Angular-resolved X-ray absorption spectra were measured for pyrolytic graphite samples of various quality. A new approach to determining the misorientation of graphite grains in polycrystalline samples is proposed, which is based on calculations of the angular dependence of the relative intensity of a peak corresponding to the π* state for a normal distribution of grains. The experimental values are used to construct theoretical angular dependences using partial densities of the π* and σ* states determined from the nonempirical calculations for graphite. |
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