Polarized reflectometer for the investigation of surface magnetism, the new polarized neutron reflectometer with polarization analysis at the Laboratoire Leon!Brillouin

We present the new polarized reflectometer for the investigation of surface magnetism, which has been built at the Laboratoire Leon Brillouin. This polarized neutron reflectometer with polarization analysis has been optimized for the study of small magnetic samples (1 cm(2) range). We describe the new multilayer monochromator which has permitted us to obtain a wider wavelength distribution (similar to 4%) and the focusing neutron guide which has allowed the focalization of a 100 mm high beam onto a region 15 mm high. This new optical setup has allowed a large neutron flux increase, which is now of 2 x 10(5) n/cm(2) s. (C) 2000 American Institute of Physics. [S0034-6748(00)04910-8].