DYNAMICS OF LIQUID CCL4 FROM QUASI-ELASTIC NEUTRON-SCATTERING

Medium- (DELTA-E = 50 mu-eV) and high-resolution (DELTA-E = 15-mu-eV) neutron quasi-elastic scattering spectra of liquid CCl4 at two temperatures within the liquid range are reported. The (mostly coherent) dynamical structure factors are analysed in terms of a model which takes into account the effects of the liquid structure on the single-particle dynamics, and extends the usual rotational diffusion approximations. Such an extension was found to be necessary in order to reconcile the measured dynamical parameters with those available from NMR relaxation.