Ultra-Small-Angle Neutron Scattering —History, Developments and Applications—

Abstract

Ultra-small-angle neutron scattering (USANS), which is a scattering method observing in a q-region of q=10⁻³nm⁻¹, was initiated by double crystal (Bonse-Hart) method. Recently, a focusing USANS method was developed by combining a pin-hole type spectrometer and focusing lenses. These two methods, which are complementary to each other, were employed to achieve wide q-observations on microbial cellulose, actin cytoskeleton, tire, and membrane-electrolyte assembly of fuel cell.