Absolute Raman scattering cross sections oftrans-(CH)x

Abstract

Measurements of the absolute Raman cross sections for trans-${\left(\mathrm{CH}\right)}_x$ are reported. The results have been analyzed to study the contribution of hot luminescence to the inelastically scattered light spectrum. The magnitude and frequency dependence of the absolute scattering cross sections are consistent with hot luminescence being the dominant process. To determine the contribution of static resonance effects (i.e., short chains) to the Raman line shape, we present sliced excitation profiles. We find no evidence for the resonance behavior of short chains.