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Quasielastic neutron scattering on glycerol

D. ARANGHEL1,* , V. TRIPADUS2, A. RADULESCU3, M. PETRE2, M. O. DIMA2, C. PETRE4

Affiliation

  1. C. PETREe National Institute for Physics and Nuclear Engineering, 77125Bucharest, Romania
  2. National Institute for Physics and Nuclear Engineering, 77125Bucharest, Romania
  3. Jülich Centre for Neutron Science, Forschungszentrum Julich, 52425 Julich, Germany
  4. e Faculty of Physics, University of Bucharest, P.O.Box MG-11, Romania

Abstract

We have done a quasielastic incoherent neutron scattering (QENS) study on the glass-forming glycerol system C3H5(OH)3 in the equilibrium liguid phase, in order to determine the temperature and wavenumber dependence of the quasielastic line width. QENS spectra are analyzed in terms of the mode-coupling theory, by convoluting the resolution function with three different models, namely one-Lorentzian, non-lorentzian and two-Lorentzians. We have found that both the non – Lorentzian and the two – Lorentzian models deliver good description of the experimental data that can be qualitatively interpreted in terms of mode coupling theories,but the experimental results show no clear distinction between them..

Keywords

Neutron scattering, Glyerol, Mode-couplyng theory, QENS.

Submitted at: April 7, 2010
Accepted at: April 26, 2010

Citation

D. ARANGHEL, V. TRIPADUS, A. RADULESCU, M. PETRE, M. O. DIMA, C. PETRE, Quasielastic neutron scattering on glycerol, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 4, pp. 953-957 (2010)