Time-resolved measurements of scaling behavior in LiCl/H 2O near the liquid-glass transition

Abstract

Time-domain light scattering experiments on ps-μs timescales permit determination of the complex compressibility modulus in liquids and glasses in the MHz-GHz frequency window. Analysis of mechanical and electrical modulus spectra for a concentrated aqueous LiCl solution yields results consistent with some predictions of mode-coupling theory: simple scaling for α-relaxation peaks and property-independent power-law functional forms for the spectra which are independent of the property described. Preliminary data from salol, recorded with an improved experimental system, are also presented.