Quasielastic neutron scattering facility at Dhruva reactor

Quasi-elastic neutron scattering is a powerful experimental tool for studyi ng the various dynamical motions in solids and liquids. In this paper, we h ave described the salient features of the quasi-elastic neutron spectromete r in operation at Dhruva reactor at Trombay, India. The design criteria hav e been such as to maximise the throughput by various means like closer appr oach to the source, focusing a larger beam on to a sample, and Multi-Angle Reflecting X-tal mode of energy analysis. Some results of molecular motions from recently studied systems using this spectrometer are also reported. ( C) 2001 Elsevier Science B.V. All rights reserved.