抄録
It is observed that radial streak patterns of double Bragg scattering appear in the small-angle X-ray scattering from highly oriented pyrolytic graphite (HOPG). The intensity profile of double Bragg scattering from an HOPG sample is calculated theoretically. Assuming that the c axes of the graphite crystallites in the HOPG sample are distributed around an orientation vector and their distribution function has a Gaussian form, it is found that the intensity profile of double Bragg scattering is expressed by a double Gaussian function of the scattering angle and the azimuthal angle of the streak. The calculated intensity profile is compared with the experimental one. The method developed in this article can be used to estimate the orientational distribution of crystallites in uniaxial polycrystalline materials.
本文言語 | English |
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ページ(範囲) | 681-698 |
ページ数 | 18 |
ジャーナル | Acta Crystallographica Section A: Foundations and Advances |
巻 | 74 |
号 | 6 |
DOI | |
出版ステータス | Published - 2018 11月 |
ASJC Scopus subject areas
- 構造生物学
- 生化学
- 材料科学(全般)
- 凝縮系物理学
- 物理化学および理論化学
- 無機化学