6533b7dbfe1ef96bd12708e8
RESEARCH PRODUCT
Resonance scattering in macromolecular structure research
H. B. Stuhrmannsubject
Materials scienceAbsorption edgeScatteringAstrophysics::High Energy Astrophysical PhenomenaSynchrotron radiationElectronNeutron scatteringAbsorption (electromagnetic radiation)Multipole expansionResonance (particle physics)Molecular physicsdescription
Resonance (or anomalous) X-ray scattering of partially ordered macromolecular structures, amorphous materials and solutions is encountered in the near edge region of X-ray absorption edges where the resonant real part f' of atomic form factors shows the strongest dispersion. The requirements of spectral brilliance in the near absorption edges can only be met by synchrotron radiation emitted from high energy electron (positron) storage rings. Resonance scattering yields three basic scattering functions. This compares to contrast variation in neutron scattering. The relations to isomorphous replacement methods of crystallography are discussed. The analysis of the basic scattering functions in terms of a multipole expansion provides a promising strategy, once the possibilities of synchrotron radiation are fully exploited so as to allow for the required high precision of the scattering measurements.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-11-13 |