Accession Number : AD0777935

Title :   Structural Relaxation by Digital-Correlation Spectroscopy.

Descriptive Note : Technical rept.,

Corporate Author : CATHOLIC UNIV OF AMERICA WASHINGTON D C VITREOUS STATE LAB

Personal Author(s) : Demoulin,C. ; Montrose,C. J. ; Ostrowsky,N.

Report Date : MAR 1974

Pagination or Media Count : 5

Abstract : The utility of digital-correlation spectroscopy for investigating structural relaxation in liquids on time scales from 1 miceosec to 1 sec is established. A digital correlator was used to analyze the Rayleigh scattering of light from undercooled glycerol. The correlation function obtained is related to the isothermal structural relaxation dynamics of the liquid. The data were found to join smoothly with those obtained ultrasonically at higher temperatures. (Author)

Descriptors :   *Glycerols, *Relaxation, *Rayleigh scattering, Correlation techniques, Relaxation time, Fluids, Viscoelasticity, Spectrum analysis

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE