Molecular scattering differential cross sections of 59.5 keV γ-rays have been measured for some compounds of Na, Mg, Al, Ca, and Fe elements at 90°. The γ-rays of Am-241 were counted using a Si(Li) detector of EDXRF (energy dispersive X-ray fluorescence) system. The experimental results have been compared with non-relativistic and relativistic theoretical values.
The results of a new set of photon–atom scattering measurements in a low momentum-transfer region (0.02–0.04 mc) for medium- and high-Z elemental scatterers in the form of foils are presented. A comparison with the theoretical results based on the Thomas–Fermi model for the incoherent scattering components and the numerical S-matrix predictions for the coherent Rayleigh-scattering amplitudes are also given. The present series of measurements fills a gap in the region of low momentum transfer that has not been covered by other recent scattering experiments.
Atom Interferometry with up to 24-Photon-Momentum-Transfer Beam Splitters