Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS) and Julich Centre for Neutron Science (JCNS)
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
Univ. of Augsburg, Augsburg (Germany). Center for Electronic Correlations and Magnetism
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.
Gupta, S., et al. "Excess wing in glass-forming glycerol and LiCl-glycerol mixtures detected by neutron scattering." European Physical Journal. E, Soft Matter (print), vol. 38, no. 1, Jan. 2015. https://doi.org/10.1140/epje/i2015-15001-0
Gupta, S., Arend, N., Lunkenheimer, P., Loidl, A., Stingaciu, L., Jalarvo, N., Mamontov, E., & Ohl, M. (2015). Excess wing in glass-forming glycerol and LiCl-glycerol mixtures detected by neutron scattering. European Physical Journal. E, Soft Matter (print), 38(1). https://doi.org/10.1140/epje/i2015-15001-0
@article{osti_1261408,
author = {Gupta, S. and Arend, N. and Lunkenheimer, P. and Loidl, A. and Stingaciu, L. and Jalarvo, N. and Mamontov, E. and Ohl, M.},
title = {Excess wing in glass-forming glycerol and LiCl-glycerol mixtures detected by neutron scattering},
annote = {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.},
doi = {10.1140/epje/i2015-15001-0},
url = {https://www.osti.gov/biblio/1261408},
journal = {European Physical Journal. E, Soft Matter (print)},
issn = {ISSN 1292-8941},
number = {1},
volume = {38},
place = {United States},
publisher = {EDP Sciences},
year = {2015},
month = {01}}
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 696https://doi.org/10.1016/j.nima.2012.08.059