ISIS Neutron and Muon Source Data Journal

The hypersensitivity of the water phase diagram to ammonium fluoride doping

Abstract: Water displays a highly complex phase diagram that is key to a range of critical processes, from the evolution of icy moons to that of the Earth's hydrosphere and even of life itself. Using ISIS facilities, we have recently shown that the water phase diagram is hypersensitive to ammonium fluoride doping which leads to the complete disappearance of the hydrogen-ordered ice II from the phase diagram. This phenomenon can be explained on the basis of the topologically constraint nature of ice II and the incompatibility of ammonium and fluoride ions with the ordered local structure. Building on this exciting finding we now need to further map the phase diagram of ND4F/ice mixtures and to investigate the effect of ND4F on the hydrogen ordering phase transitions from ice III to IX and ice VII to VIII. These experiments will give new insights into the origins of the complexity of condensed H2O.

Principal Investigator: Professor Christoph Salzmann
Experimenter: Dr Alexander Rosu-Finsen
Experimenter: Mr Martin Hart
Experimenter: Dr Craig Bull
Experimenter: Ms Zainab Sharif [Deactivated]
Experimenter: Miss Siriney Halukeerthi
Experimenter: Miss Sukhpreet Talewar

DOI: 10.5286/ISIS.E.RB1710176

ISIS Experiment Number: RB1710176

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Professor Christoph Salzmann et al; (2017): The hypersensitivity of the water phase diagram to ammonium fluoride doping, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1710176

Data is released under the CC-BY-4.0 license.