ISIS Neutron and Muon Source Data Journal

What processes dominate porosity and structure evolution in Amorphous Solid Water (ASW)?

Abstract: This experiment will measure the microstructure of Amorphous Solid Water (ASW), a porous material that can be formed by vapour-depositing water onto a cold plate, an excellent analogue of the ice found in star- and planet-forming regions of our galaxy. The thermal and temporal evolution of this metastable condensed-matter material has major implications in the physical and chemical role ices play in astrophysical environments. Our previous work on ISIS NIMROD has shown that the ASW has very small-scale porosity, and hints at larger scale structure of the material. With NIMROD data alone we are unable to elucidate whether the pores collapse or aggregate, a "hot" debate in the ice literature. This experiment tests ASW porosity scales and exploits the broad Q-range of SANS2d, with higher Q data providing a direct overlap to our earlier results obtained on NIMROD.

Local Contact: Dr Sarah Rogers
Experimenter: Dr Pierre Ghesquiere
Experimenter: Dr Ragesh Kumar TP
Experimenter: Dr Helen Fraser

DOI: 10.5286/ISIS.E.RB1820601

ISIS Experiment Number: RB1820601

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 Sarah Rogers et al; (2019): What processes dominate porosity and structure evolution in Amorphous Solid Water (ASW)?, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1820601

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