ISIS Neutron and Muon Source Data Journal

Copy of: Division of the supercritical fluid state into liquid- and gas-like states in CH4

Abstract: In recent years, the long-standing belief that beyond the critical point, matter exhibits no clear transition between liquid-like and gas-like states has been questioned. A line on the phase diagram, the Frenkel line, has been proposed which does separate matter into liquid-like and gas-like states beyond the critical point. However, a direct experimental proof of the existence of the Frenkel line has proved elusive.If the Frenkel line does exist, the consequences are wide-ranging; from our understanding of thermodynamics, to use of supercritical fluids in the food, chemical and power industries, to our understanding of the interiors of gas-giant planets.We propose neutron diffraction experiments on fluid methane to elucidate whether or not the Frenkel line exists, building on the tentative evidence provided by our Raman spectroscopy and X-ray diffraction experiments.

Principal Investigator: Dr John Proctor
Experimenter: Dr Clemens Prescher
Local Contact: Dr Silvia Imberti
Experimenter: Dr Ciprian Pruteanu
Experimenter: Dr Dean Smith
Experimenter: Dr John Loveday

DOI: 10.5286/ISIS.E.RB1810145

ISIS Experiment Number: RB1810145

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 John Proctor et al; (2018): Copy of: Division of the supercritical fluid state into liquid- and gas-like states in CH4, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1810145

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