Excess wing in glass-forming glycerol and LiCl-glycerol mixtures   detected by neutron scattering
  The relaxational dynamics in glass-forming glycerol and glycerol mixed with LiCl is in-vestigated using different neutron scattering techniques. The performed neutron spin-echo experiments, which extend up to relatively long relaxation-time scales of the order of 10 ns, should allow for the detection of contributions from the so-called excess wing. This phenomenon, whose microscopic origin is controversially discussed, arises in a variety of glass formers and, until now, was almost exclusively investigated by dielectric spectros-copy and light scattering. Here we show that the relaxational process causing the excess wing also can be detected by neutron scattering, which directly couples to density fluctua-tions. 
S. Gupta, N. Arend, P. Lunkenheimer, A. Loidl, L. Stingaciu, N.   Jalarvo, E. Mamontov, and M. Ohl
cond-mat.dis-nn cond-mat.soft