We report on a series of experiments performed on the very flexible TOF spe
ctrometer NEAT at the Berlin Neutron Scattering Center, which demonstrates
one of the unusual possibilities offered by this instrument: TOF diffractio
n with incident neutron wavelengths up to at least 20 Angstrom. This is esp
ecially suitable for studies of complex systems with large unit cells, as t
he structural characterization and inelastic scattering measurements can be
carried out consecutively, without changing geometry and sample environmen
t. (C) 2000 Elsevier Science B.V. All rights reserved.