Surface dynamics during environmental degradation of crystal surfaces

The Final Report describes results of further investigation of nature of vicinal sectorality in KDP crystals. Part I contains data of quantitative estimation of distinctions between the lattice parameters in the neighbor growth sectors and vicinal sectors of some rapidly grown KDP and DKDP crystals. It demonstrates opportunities of the plane wave X-ray topography for quantitative characterization of crystals grown in known conditions. Part II gives description of some mechanisms of striations formation in which the vicinal sectorality takes an important part