Thermal dependence of the characteristic time of a chemical reaction.

Abstract

We report the temperature dependence of the chemical reaction characteristic time of crotonaldehyde and methylcyclohexane detected previously at room temperature [Phys. Rev. A 41, 6 (1990)]. As with measurements effectuated by ultrasound techniques, we found an Arrhenius law for the temperature dependence of the characteristic time. Good agreement with known thermal and transport coefficients was found. The accuracy of the determination of the activation energy with the Rayleigh-Brillouin scattering technique is much more precise than with ultrasound techniques.