Neutron time-of-flight spectroscopy

In this lecture the authors discuss the technique of time-of-flight spectroscopy. Strictly speaking, all experiments performed using instruments at a pulsed neutron source can be characterized as time-of-flight spectroscopy, but they restrict their attention to experiments and instruments at steady state sources (research reactors). Furthermore they shall only be concerned with direct geometry inelastic scattering instruments. The terms 'direct geometry' and 'inelastic scattering' will first be explained