ISIS Neutron and Muon Source Data Journal

High pressure behaviour of ammonium carbonate monohydrate

Abstract: A number of compounds crystallise in the NH3-H2O-CO2 ternary system, including ammonium carbonates and carbamates, these being closely related to the water-deficient compound urea. NH3, H2O and CO2 are abundant in interstellar and planetary ices so we expect carbonates and carbamates to occur in the interiors of icy planetary bodies.Our objective is to obtain high-pressure information on the structure and properties of ternary NH3-H2O-H2O compounds to provide the basis of accurate planetary interior models. The proposed experiment complements recent ab initio calculations that show extreme elastic anisotropy (specifically, negative linear compressibility).Here we propose to compress protonated single crystals of ammonium carbonate monohydrate using a TiZr gas cell on SXD, which we hope will confirm our DFT calculations and reveal the existence of any high-pressure polymorphs.

Principal Investigator: Dr Dominic Fortes
Experimenter: Professor Ian Wood
Local Contact: Dr Matthias Gutmann
Experimenter: Dr Christopher Howard

DOI: 10.5286/ISIS.E.RB1610094

ISIS Experiment Number: RB1610094

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:
Dr Dominic Fortes et al; (2016): High pressure behaviour of ammonium carbonate monohydrate, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1610094

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