Off–specular neutron scattering from islands on a lamellar film

Off-specular neutron scattering is employed to study islands formation on the surface of deuterated polystyrene-polybutylmethacrylate (PS-PBMA) copolymer him, It is shown, that the intensity distribution measured over a broad range of angles of incidence and scattering is well described by the distorted Rave born approximation (DWBA)-based theory valid either in the kinematic regime or in the range of the total reflection. A set of island parameters such as mean lateral size, concentration, as well as those characterizing their internal structure is found. (C) 2000 Elsevier Science B.V. All rights reserved.