Optimization of scattering samples in neutron time-of-flight experiments

The finite geometry of neutron source (gas-target), scattering sample and detector as well as the finite resolution of the extraxted cyclotron beam in energy and time disturb the time-of-flight spectra in neutron scattering experiments. The analysis of the experimental results has to correct for these disturbances. These disturbing effects habe been studied by means of a Monte Carlo program. The shape, size and set up of the scattering sample have decisive influence upon these disturbances. In carefully chosen problems guidelines are worked out for optimizing the scattering sample. A series of experiments is suggested which could test our computer code. (orig.)