A new thermal neutron reflectometer at HANARO

초록

A new neutron reflectometer has been installed at the HANARO, research reactor in Korea. The scattering geometry is horizontal and, as a result, the sample is placed vertically. The wavelength of the incident neutron beam is 2.45 angstrom, and monochromated by a pyrolytic graphite crystal with a mosaicity of 0.4 degrees. A detection of the incident and reflected neutron beams is via a helium-3 neutron detector. The neutron reflectivities of deuterated polystyrene and SiO2 thin films were measured using this instrument. A neutron reflectivity as low as 10(-6) was determined. The maximum neutron momentum transfer, Q, reached 0.4 angstrom(-1) for the solid thin films. (c) 2006 Elsevier B.V. All rights reserved.

키워드