Quasi-elastic neutron scattering measurements of liquid germanium

From the quasi-elastic neutron scattering experiment, dynamic structure factors, S(Q, E) were obtained at both 1000°C and 1500°C. To understand the distribution of the dynamic structure factor as a scattering low, the half-width at half-maximum (HWHM) of dynamic structure factor was determined. It is clear that the Q dependence for HWHM of S(Q, E) does not fulfil the rigorous definition on the condition of the phenomenon called the de Gennes narrowing. From the Fourier transform, the intermediate scattering function, F(Q, t), is obtained. From the result of F(Q, t), it is clear that the relaxation process of liquid germanium is different from that of simple liquid.