ELECTRON CHARGE-DISTRIBUTION IN LIQUID TE

The structure factors of liquid Te at 470-degrees-C and 570-degrees-C have been newly obtained by X-ray and neutron diffraction. A remarkabl e and clear difference has been found between X-ray and neutron diffra ction results. The ion-electron correlation function and valence elect ron distribution were evaluated from this difference at two temperatur es of 4700-degrees-C and 570-degrees-C. The obtained electron charge d istribution function shows two peaks at the distance around 0.80 angst rom and 1.70 angstrom just above the melting temperature of 470-degree s-C, which corresponds to the distribution of the lone pair electrons and the covalent bonded electrons around a central tellurium ion, resp ectively. At higher temperature of 570-degrees-C, a single peak is obs erved at the distance around 1.1 angstrom in the electron charge distr ibution function.