Spectroscopy of interparticle interactions in ionic and molecular
liquids: Novel approaches
S. A. Kirillov
Institute for Technological and Information Innovations,
P.O.Box 263, 03134 Kyiv, Ukraine, and Institute of Sorption and Problems
of Endoecology, Ukrainian National Academy of Sciences, 13, Gen.Naumov
St., 03680 Kyiv, Ukraine
Abstract:
The paper deals with several novel approaches to the studies of interactions
and dynamics in liquids. A new, flexible time-correlation function is
introduced. It has an analytical counterpart in the frequency domain
and enables one to fit even badly overlapped vibrational line profiles
obtaining dynamical information at the same time. As examples, quantitative
description of the interaction potential in molten salts containing
halide complexes of zinc and manganese is presented, the dynamic criterion
of complex entities in a melt is introduced, and the spectroscopic features
of molten alkali and alkaline earth halides are explained in terms of
short-lived collision complexes. Finally, the model treatment of "anomalous"
noncoincidence effects in liquids is discussed, and the contribution
of repulsion and attraction forces resulting in frequency non-coincidences
is separated.
*Lecture presented at the European Molecular Liquids
Group (EMLG) Annual Meeting on the Physical Chemistry of Liquids: Novel
Approaches to the Structure, Dynamics of Liquids: Experiments, Theories,
and Simulation,Rhodes, Greece, 7-15 September 2002. Other presentations
are published in this issue, pp. 1-261.
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