A theoretical study of elastic X-ray scattering

Robert F. Stewart, Dirk Feil

Research output: Contribution to journalArticleAcademic

22 Citations (Scopus)
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Bragg X-ray scattering intensities are defined as scattering by the thermodynamic average electron-charge density. Purely elastic, kinematic X-ray scattering by a target in thermal equilibrium is always larger than Bragg scattering. At low temperatures, the elastic scattering becomes Bragg scattering. For large molecules, such as a crystal, at ordinary temperatures the elastic and Bragg scattering differ in a relative sense by O(N-1), where N is the number of vibrational degrees of freedom. For most practical cases the Bragg scattering is essentially the same as purely elastic scattering of X-rays.
Original languageEnglish
Pages (from-to)503-509
JournalActa crystallographica Section A: Crystal physics, diffraction, theoretical and general crystallography
Publication statusPublished - 1980


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