THE BETA-RELAXATION AMPLITUDES FOR A DIPOLAR HARD-SPHERE GLASS

The p-relaxation amplitudes h(l,l')(m) (q) for a dipolar hard sphere m odel are calculated in the diagonalization approximation up to l = 1. The relevance to experimental difficulties to detect the characteristi c beta-relaxation minimum in dielectric loss measurements is discussed . Additionally, the microscopic nature of the beta-relaxation of the r otational components is investigated by discussing the amplitudes in r eal space at different temperatures and densities. (C) 1998 Elsevier S cience B.V. All rights reserved.