Dynamical and Defect Behavior Near Melting in Solid Rubidium

摘要

Large single crystals of Rb have been studied with elastic and inelastic neutron scattering in order to test various theoretical models relating the melting process to a dynamical or defect instability in the solid phase. Small q transverse and longitudinal phonon groups were found to be unchanged at the melting point, ruling out a Born type instability. Elastic diffuse scattering was found to be strongly suggestive of a defect instability related to the melting process in solid Rb. (ERA citation 03:015447)