Divergent beam optic to perform Bragg-Brentano measurements with an energy resolution of about 450 eV, resulting in improved peak to background ratio and better low angle performances. It also replaces incident beam Ni Beta-filter. It includes all necessary slits, Soller slits holder, one attenuator Cu(0.2 mm)/ Ni (0.02 mm) and one attenuator Cu 0.1 mm.
