Neutron diffraction measurements with isotopic substitution (NDIS) and Deep In-elastic Neutron Scattering (DINS) experiments have been performed on bulk liquid water in the supercooled regime. Supercooling of ultra-pure water has been obtained thanks to a PTFE coating of the sample container. From the structural point of view the effect of supercooling at ambient pressure results in a slight change of the water coordination shells with respect to the structure of ambient water, although similarities with Low Density Water can be observed. As a matter of fact, the present data compare well with previous results obtained at about the same temperature, applying external pressure and can be interpreted within the second critical point scenario. DINS measurements have been carried out on this system with the aim of determining the anharmonic character of the momentum distribution of the protons, complementing the structural information on supercooled bulk water. (c) 2007 Elsevier B.V. All rights reserved.

Botti, A., Bruni, F., Ricci, M.a., Pietropaolo, A., Senesi, R., Andreani, C. (2007). Structure and Single Proton Dynamics of Bulk Supercooled Water. JOURNAL OF MOLECULAR LIQUIDS, 136(3), 236-240 [10.1016/j.molliq.2007.08.017].

Structure and Single Proton Dynamics of Bulk Supercooled Water

Senesi, R.;Andreani, C.
Supervision
2007-01-01

Abstract

Neutron diffraction measurements with isotopic substitution (NDIS) and Deep In-elastic Neutron Scattering (DINS) experiments have been performed on bulk liquid water in the supercooled regime. Supercooling of ultra-pure water has been obtained thanks to a PTFE coating of the sample container. From the structural point of view the effect of supercooling at ambient pressure results in a slight change of the water coordination shells with respect to the structure of ambient water, although similarities with Low Density Water can be observed. As a matter of fact, the present data compare well with previous results obtained at about the same temperature, applying external pressure and can be interpreted within the second critical point scenario. DINS measurements have been carried out on this system with the aim of determining the anharmonic character of the momentum distribution of the protons, complementing the structural information on supercooled bulk water. (c) 2007 Elsevier B.V. All rights reserved.
2007
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/03
English
Con Impact Factor ISI
supercooled water
neutron diffraction
neutron scattering
momentum distribution
Botti, A., Bruni, F., Ricci, M.a., Pietropaolo, A., Senesi, R., Andreani, C. (2007). Structure and Single Proton Dynamics of Bulk Supercooled Water. JOURNAL OF MOLECULAR LIQUIDS, 136(3), 236-240 [10.1016/j.molliq.2007.08.017].
Botti, A; Bruni, F; Ricci, Ma; Pietropaolo, A; Senesi, R; Andreani, C
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/351363
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