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Breakup of the Hydrogen Bond Network In Water:The Momentum Distribution of the Protons | G. Reiter
; T.Abdul-Redah
; J.C.LI
; J.Mayers
; P. Platzman
; | Date: |
27 Nov 2003 | Subject: | cond-mat | Abstract: | Neutron Compton Scattering measurements presented here of the momentum distribution of hydrogen in water at temperatures slightly below freezing to the supercritical phase show a dramatic change in the distribution as the hydrogen bond network becomes more disordered. Within a single particle interpretation, the proton moves from an essentially harmonic well in ice to a slightly anharmonic well in room temperature water, to a deeply anharmonic potential in the supercritical phase that is best described by a double well potential with a separation of the wells along the bond axis of about .3 Angstroms. Confining the supercritical water in the interstices of a C60 powder enhances this anharmonicity. The changes in the distribution are consistent with gas phase formation at the hydrophobic boundaries. | Source: | arXiv, cond-mat/0311628 | Services: | Forum | Review | PDF | Favorites |
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