TY - JOUR
T1 - A theoretical study of elastic X-ray scattering
AU - Stewart, Robert F.
AU - Feil, Dirk
PY - 1980
Y1 - 1980
N2 - 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.
AB - 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.
U2 - 10.1107/S0567739480001155
DO - 10.1107/S0567739480001155
M3 - Article
SN - 0567-7394
VL - 36
SP - 503
EP - 509
JO - Acta crystallographica Section A: Crystal physics, diffraction, theoretical and general crystallography
JF - Acta crystallographica Section A: Crystal physics, diffraction, theoretical and general crystallography
ER -