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Title: Excess wing in glass-forming glycerol and LiCl-glycerol mixtures detected by neutron scattering

Journal Article · · European Physical Journal. E, Soft Matter (print)
 [1];  [2];  [3];  [3];  [1];  [1];  [4];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS) and Julich Centre for Neutron Science (JCNS)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS) and Julich Centre for Neutron Science (JCNS); Julich Centre for Neutron Science JCNS, Garching (Germany). Outstation at MLZ
  3. Univ. of Augsburg, Augsburg (Germany). Center for Electronic Correlations and Magnetism
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)

The relaxational dynamics in glass-forming glycerol and glycerol mixed with LiCl is investigated using different neutron scattering techniques. The performed neutron spin echo experiments, which extend up to relatively long relaxation time scales of the order of 10 ns, should allow for the detection of contributions from the so-called excess wing. This phenomenon, whose microscopic origin is controversially discussed, arises in a variety of glass formers and, until now, was almost exclusively investigated by dielectric spectroscopy and light scattering. In conclusion, we show here that the relaxational process causing the excess wing can also be detected by neutron scattering, which directly couples to density fluctuations.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1261408
Journal Information:
European Physical Journal. E, Soft Matter (print), Vol. 38, Issue 1; ISSN 1292-8941
Publisher:
EDP SciencesCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 14 works
Citation information provided by
Web of Science

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Effects of Magnetic and Kinetic Helicities on the Growth of Magnetic Fields in Laminar and Turbulent Flows by Helical Fourier Decomposition journal February 2017
Exponential trajectories, cell size fluctuations, and the adder property in bacteria follow from simple chemical dynamics and division control journal June 2020
Effects of magnetic and kinetic helicities on the growth of magnetic fields in laminar and turbulent flows by helical-Fourier decomposition text January 2016

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