Finney, JL;
Bowron, DT;
Soper, AK;
Loerting, T;
Mayer, E;
Hallbrucker, A;
(2002)
Structure of a new dense amorphous ice.
PHYS REV LETT
, 89
(20)
, Article 205503. 10.1103/PhysRevLett.89.205503.
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Abstract
The detailed structure of a new dense amorphous ice, VHDA, is determined by isotope substitution neutron diffraction. Its structure is characterized by a doubled occupancy of the stabilizing interstitial location that was found in high density amorphous ice, HDA. As would be expected for a thermally activated unlocking of the stabilizing "interstitial," the transition from VHDA to LDA (low-density amorphous ice) is very sharp. Although its higher density makes VHDA a better candidate than HDA for a physical manifestation of the second putative liquid phase of water, as for the HDA case, the VHDA to LDA transition also appears to be kinetically controlled.
| Type: | Article |
|---|---|
| Title: | Structure of a new dense amorphous ice |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.89.205503 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.89.205503 |
| Language: | English |
| Keywords: | PRESSURE-INDUCED AMORPHIZATION, LIQUID WATER, 1ST-ORDER TRANSITION, RAMAN-SPECTRA, X-RAY, 77 K, DIFFRACTION, BEHAVIOR, H2O, IH |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/9516 |
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