Dynamic effects investigation in liquid gallium by slow inelastic neutron scattering

The small momentum transfer region in the liquid gallium is of particular interest for studying collective excitations. Liquid gallium has been studied at 373 K and 723 K by the slow inelastic neutron scattering technique in the Q region below the first diffraction maximum. The scattering function S(Q,ω) for constant Q shows side peaks corresponding to damped phonons. The spectral distribution f(h,ω) of the velocity autocorrelation function is also obtained from measurements. (author) 3 Figs., 28 Refs