Off-specular neutron scattering from islands on a lamellar film

Off-specular neutron scattering is employed to study islands formation on t he surface of deuterated polystyrene-polybutylmethacrylate (PS-PBMA) copoly mer him, It is shown, that the intensity distribution measured over a broad range of angles of incidence and scattering is well described by the disto rted Rave born approximation (DWBA)-based theory valid either in the kinema tic regime or in the range of the total reflection. A set of island paramet ers such as mean lateral size, concentration, as well as those characterizi ng their internal structure is found. (C) 2000 Elsevier Science B.V. All ri ghts reserved.