Abstract
The analysis of neutron scattering results on H dynamics () and the dynamic structure factor () around the intermolecular peak and at intermediate length scales in terms of the susceptibilities reveals three processes (diffusive, local relaxational and vibrational) at frequencies below 3 THz, to which the contributions commonly invoked in dielectric studies can be directly mapped. We achieve a unified description of the results from both techniques, clarifying the nature of the molecular motions involved in the dielectric spectra and their impact on the structural relaxation.
- Received 16 April 2016
DOI:https://doi.org/10.1103/PhysRevLett.117.185501
© 2016 American Physical Society
Physics Subject Headings (PhySH)
Viewpoint
Deciphering Water’s Dielectric Constant
Published 24 October 2016
The combination of two spectroscopic techniques reveals the microscopic mechanisms that control the behavior of water’s dielectric constant.
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