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0I  would be very grateful to those who could check grammar and syntax of  the following text, as well as the English soundness of the sentences I  used. This is a conference abstract that I have to submit within the  next few days.02br00  Thanks in advance!02br00  gyru02br02br01i00___________________________________________________________________________________________02i02br02br00COLLECTIVE DYNAMICS IN  BINARY MIXTURES: BENCHMARKING CURRENT THEORETHICAL APPROACHES02br02br00The collective, high frequency, dynamics of  molten sodium has been studied by means of Inelastic Neutron Scattering. Two  different theoretical approaches within the scheme of generalized hydrodynamics  are tested against the experimental data: i) starting from simple liquids  paradigm, we extend the memory function formalism including concentration  fluctuations variable ii) we apply Generalized Collective Mode theory to  identify the very nature of the observed excitations. We find clear evidence of  a crossover between a low Q, collective region, to an high Q region dominated  by atom-type excitations. The collective region is characterized by a positive  dispersion of viscoelastic origin. This result, based on experimental data,  clarifies the difference between fast sound and positive dispersion phenomena often  observed in liquids. 0-

Mister Micawber · Accepted Answer

0COLLECTIVE DYNAMICS IN BINARY MIXTURES: BENCHMARKING CURRENT 01b00THEORETICAL02b00 APPROACHES02br
02br
00The 01b00collective high frequency dynamics02b00 of molten sodium 01b00are 02b00studied by means of Inelastic Neutron Scattering. Two different theoretical approaches within the scheme of generalized hydrodynamics are tested against the experimental data: i) starting from 01b00a/the02b00 simple liquids paradigm, we extend the memory function formalism including concentration fluctuations variable01b00; 02b00 ii) we apply Generalized Collective Mode theory to identify the 01b00precise02b00 nature of the observed excitations. We find clear evidence of a crossover between a01b00 low Q collective02b00 01b00region to a02b00 high Q region dominated by atom-type excitations. The collective region is characterized by a positive dispersion of viscoelastic origin. This result, based on experimental data, clarifies the difference between fast sound and positive dispersion phenomena often observed in liquids.0-

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