ISIS Neutron and Muon Source Data Journal

How is the nanoscale structure of Amorphous Solid Water (ASW) impacted by the presence of adsorbates?

Abstract: This experiment will determine how the structure and porosity of Amorphous Solid Water (ASW) changes when the “ice” is “contaminated” by adsorbate molecules. ASW is a porous material formed by vapour-depositing water onto a cold plate, an analogue of the ice found in star- and planet-forming regions of our galaxy. Our previous work has shown that the ASW has very small-scale porosity, but NIMROD data of the pure water ice alone are unable to elucidate pore accessibility; open pores can trap volatile molecules well beyond their desorption temperature and therefore act as a reservoir for coolant molecules in star-forming regions. This experiment tests ASW porosity evolution as a function of ice-adsorbate morphology and measures ASW structural changes as the ice is grown and heated, exploiting the broad Q-range of NIMROD to probe the molecular level and meso-scale of the ice concurrently.

Principal Investigator: Dr Helen Fraser
Experimenter: Dr Tristan Youngs
Local Contact: Dr Tom Headen
Experimenter: Dr Sabrina Gaertner
Experimenter: Dr Daniel Bowron
Experimenter: Dr Pierre Ghesquiere
Experimenter: Mr Vincent DEGUIN

DOI: 10.5286/ISIS.E.RB1900135

ISIS Experiment Number: RB1900135

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 Helen Fraser et al; (2019): How is the nanoscale structure of Amorphous Solid Water (ASW) impacted by the presence of adsorbates?, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1900135

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