Slit and phase grating diffraction with a double crystal diffractometer

The lateral coherence properties of a neutron beam amp; 61548; 0.5248 nm in a double crystal diffractometer DCD were studied by means of single slit diffraction and by diffraction by different perfect Silicon phase gratings. Perfect agreements were found for the lateral coherence length measured with the slit and for the one determined by Silicon phase gratings, however, some peculiarities are still presen