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|Title:||Determination of anomalous elastic-scattering of gamma-rays of energies close to K-shell binding thresholds|
|Publisher:||ELSEVIER SCIENCE BV|
|Citation:||NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,353,209-211|
|Abstract:||Anomalous'' scattering corrections to Rayleigh scattering amplitudes calculated in the form factor approximation are of considerable interest in the study of elastic-scattering of gamma-rays and X-rays. When photon energies are close to binding energies of atomic inner shell electrons, the corrections have relatively large magnitudes. But under such conditions, the comparatively weak elastic-scattering contribution cannot be resolved even with semiconductor detectors from most of the components of target K beta(2)' X-rays. It is shown that elastic-scattering in such an interesting energy regime can be determined with the help of a least-squares-fitting procedure for the composite spectrum. The procedure is illustrated with a detailed study of 81.0 keV gamma-ray scattering from gold having a K shell binding energy of 80.723 keV. Data were obtained at several angles with gold and other targets of different atomic number Z.|
|Appears in Collections:||Proceedings papers|
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