Double Bragg scattering observed in small-angle X-ray scattering from highly oriented pyrolytic graphite

Yoshinori Ohmasa; Susumu Shimomura; Ayano Chiba

doi:10.1107/S1600576716004568

Double Bragg scattering observed in small-angle X-ray scattering from highly oriented pyrolytic graphite

Yoshinori Ohmasa, Susumu Shimomura, Ayano Chiba

Department of Physics

Research output: Contribution to journal › Article

6 Citations (Scopus)

Abstract

In small-angle X-ray scattering from highly oriented pyrolytic graphite, radial streak patterns are observed. The streaks change their direction with sample rotation and appear and disappear in pairs. This streak pattern can be explained by double Bragg scattering. The directions of the streaks calculated as functions of the rotation angle are in good agreement with experiment. In addition, asymmetry in the intensity of the streaks and a small deviation from the radial pattern are observed, and they can be explained by the finite sample-size effect. The necessity of taking double Bragg scattering into account in small-angle X-ray scattering studies of crystalline materials is emphasized.

Original language	English
Pages (from-to)	835-844
Number of pages	10
Journal	Journal of Applied Crystallography
Volume	49
DOIs	https://doi.org/10.1107/S1600576716004568
Publication status	Published - 2016

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Keywords

double Bragg scattering
highly oriented pyrolytic graphite
HOPG
radial streak patterns
SAXS
small-angle X-ray scattering

ASJC Scopus subject areas

Biochemistry, Genetics and Molecular Biology(all)

Cite this

Ohmasa, Y., Shimomura, S., & Chiba, A. (2016). Double Bragg scattering observed in small-angle X-ray scattering from highly oriented pyrolytic graphite. Journal of Applied Crystallography, 49, 835-844. https://doi.org/10.1107/S1600576716004568

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abstract = "In small-angle X-ray scattering from highly oriented pyrolytic graphite, radial streak patterns are observed. The streaks change their direction with sample rotation and appear and disappear in pairs. This streak pattern can be explained by double Bragg scattering. The directions of the streaks calculated as functions of the rotation angle are in good agreement with experiment. In addition, asymmetry in the intensity of the streaks and a small deviation from the radial pattern are observed, and they can be explained by the finite sample-size effect. The necessity of taking double Bragg scattering into account in small-angle X-ray scattering studies of crystalline materials is emphasized.",

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AU - Chiba, Ayano

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N2 - In small-angle X-ray scattering from highly oriented pyrolytic graphite, radial streak patterns are observed. The streaks change their direction with sample rotation and appear and disappear in pairs. This streak pattern can be explained by double Bragg scattering. The directions of the streaks calculated as functions of the rotation angle are in good agreement with experiment. In addition, asymmetry in the intensity of the streaks and a small deviation from the radial pattern are observed, and they can be explained by the finite sample-size effect. The necessity of taking double Bragg scattering into account in small-angle X-ray scattering studies of crystalline materials is emphasized.

AB - In small-angle X-ray scattering from highly oriented pyrolytic graphite, radial streak patterns are observed. The streaks change their direction with sample rotation and appear and disappear in pairs. This streak pattern can be explained by double Bragg scattering. The directions of the streaks calculated as functions of the rotation angle are in good agreement with experiment. In addition, asymmetry in the intensity of the streaks and a small deviation from the radial pattern are observed, and they can be explained by the finite sample-size effect. The necessity of taking double Bragg scattering into account in small-angle X-ray scattering studies of crystalline materials is emphasized.

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KW - radial streak patterns

KW - SAXS

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10.1107/S1600576716004568