DYNAMICS OF SUPERIONIC COPPER CHLORIDE SALT MELT

Velocity auto correlation function, mean square displacement and power spectrum of molten Copper Chloride have been computed in static harmo nic well approximation. Further, partial dynamic structure factors and longitudinal current-current correlation functions for certain fixed values of wave vector transfer 'q' have been studied. Finally, quasi-p honon dispersion curves have been drawn from the spectral functions of longitudinal current-current correlations. The results for the veloci ty auto correlation function show that the anions exhibit strong back scattering motion. Quasi-phonon dispersion curve obtained in Superioni c melt shows the first minima at the value of wave vector transfer q, where the static structure factor S(q) shows the first peak. Presence of the sharp phonon dispersion in superionic melt is indicative of the existence of ordering even at melting temperature.