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Breakdown of narrowing limit and overdamped limit of relaxation mode in low-frequency Raman spectra of ethylene glycol

Listed author(s):
  • Amo, Yuko
  • Tominaga, Yasunori
Registered author(s):

    We report depolarized low-frequency Raman spectra of ethylene glycol in wide frequency range from 0.01 to 300cm−1. The reduced Raman spectrum is reproduced with the use of a fitting function which contains two relaxation modes and three damped harmonic oscillator modes. The slow relaxation mode is characterized by the Gaussian–Markovian process under the narrowing limit. While for the fast relaxation mode the spectral profile cannot be reproduced by the function which is approximated by both narrowing limit and overdamped limit. This is the first report on the breakdown of both narrowing limit and overdamped limit in the relaxation mode of low-frequency Raman spectra.

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    Article provided by Elsevier in its journal Physica A: Statistical Mechanics and its Applications.

    Volume (Year): 265 (1999)
    Issue (Month): 3 ()
    Pages: 410-415

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    Handle: RePEc:eee:phsmap:v:265:y:1999:i:3:p:410-415
    DOI: 10.1016/S0378-4371(98)00650-5
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