Lay summary
The 9th International Conference on Quasielastic Neutron Scattering took place at the Paul Scherrer Institut, 10.-13. February, 2009.Quasielastic Neutron Scattering is a well established method to study low energy motions, like translational and rotational diffusion, and tunneling of atoms and molecules in condensed matter. This is not a laboratory method, a large scale facility having a neutron source is necessary to perform such measurements. The Swiss Spallation Neutron Source, SINQ at PSI provides this opportunity to the International User Community. Hosting this Conference at PSI drawn attention to our facilities and instruments. On the other hand, swiss scientist could learn about this technique and establish collaborations with international experts. The conference brought together 88 participants from 14 countries. 4 plenary talks, 6 invited talks, 33 short presentations and 44 poster contributions provided an excellent overview about the progress and current topics in this field of research with neutrons. It became clear that biological topics, systems with and in confinement as well as complex fluids are the future trends in QENS. The conference proceedings will be published in "Zeitschrift für Physikalische Chemie" (Oldenbourg).