The puzzle of liquid water diffusive behaviour: recent IQENS results

V. Crupi, D. Majolino, P. Migliardo and V. Venuti

Physica A: Statistical Mechanics and its Applications, 2002, vol. 304, issue 1, 59-64

Abstract: We present recent incoherent quasi-elastic neutron scattering (IQENS) results, carried out on IN6 time-of-flight spectrometer, performed on water confined into 26Å diameter pores of nanoporous Gelsil glass, as a function of temperature. From the IQENS data analysis it turns out that there is a strong confinement effect on the water molecules by the host glass that reflects, consequentially, a hindered diffusional dynamics. The quasi-elastic response has been explained in terms of two different theoretical models: (i) the well-known Dianoux–Volino model for confined diffusion, and (ii) the MCT model typical of supercooled α-relaxing systems.

Keywords: Quasi-elastic scattering; Water (search for similar items in EconPapers)
Date: 2002
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:304:y:2002:i:1:p:59-64

DOI: 10.1016/S0378-4371(01)00532-5

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