Abstract
We propose a new theoretical approach for the observed motional narrowing of the inhomogeneously broadened vibrational spectra of condensed phases. Introducing a “stretched” exponential as the modulation function of the vibrational dephasing process and attributing this function to the survivor function of an equilibrium vibrational renewal process, allows for an experimental determination of the relaxation time distributions of the numerous phenomena involved in the fluctuations of the potential acting on the probe oscillator. Applications to experimental results are reported for several n-CB liquid crystal molecules at various temperatures.
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Perrot, M., De Zen, JM., Rothschild, W.G. (1992). Application of an Equilibrium Renewal Process to Inhomogeneously-Broadened Vibrational Spectra of Condensed Phases. In: Teixeira-Dias, J.J.C. (eds) Molecular Liquids: New Perspectives in Physics and Chemistry. NATO ASI Series, vol 379. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2832-2_20
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DOI: https://doi.org/10.1007/978-94-011-2832-2_20
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