Differential cross section measurements for the elastic scattering of 59.5 keV photons by elements in the atomic region 13<=Z<=82

The differential cross sections for the elastic scattering of 59.5 keV photons by nineteen elements in the atomic region 13 less than or equal to Z less than or equal to 82 at 130 degrees have been measured and compared with those evaluated by using the form factor and S-matrix formalism. It is observed that for low Z elements, with K shell threshold below 59.5 keV, the measured scattering differential cross sections are in general agreement with the form factor approximations, whereas for high Z elements, a good agreement is observed with S-matrix calculations.