Bio-REF: Neutron reflectometer for investigation of bio-related thin films

초록

A horizontal neutron reflectometer, Bio-REF, which is dedicated to the structural characterization of polymer and biological thin films and multilayers, has been commissioned at the 30MW HANARO cold neutron reactor in Korea. The Bio-REF is a hybrid of horizontal and vertical scattering geometries, in which the sample is placed horizontally, and the specular reflectivity is mainly measured by the tilt of sample stage and a wide-range translating detector in theta-2 theta mode. While the horizontal sample setup makes the instrument possible to conduct the measurements on a "free-liquid" system as well as mounting sophisticated sample environments, the theta-2 theta operation allows to maintain the incident beam intensity and, together with the wide translational-length of the detector, the instrument is, therefore, capable of reaching a high Q similar to 0.5 angstrom(-1).

키워드