ISIS Neutron and Muon Source Data Journal

Collective quantum dynamics in Ne-D2 liquid mixtures

Abstract: A series of recent incoherent inelastic neutron scattering (INS) experiments on low-temperature D2+H2 and Ne+H2 mixtures have revealed pronounced deviations from the Gaussian approximation and, moreover, the presence of strong caging effects on the H2 dynamics, due to the rattling of the light molecules partially surrounded by the heavier ones. Given this intriguing scenario, we became convinced that coherent INS could provide a much richer picture than the one already obtained from purely single-particle investigations, but, given the strong incoherent signal from H2, we have to focus on Ne+D2 mixtures. For this reason, we are now proposing measurements on this system making use of the MARI spectrometer which has already shown to be totally suitableto investigate the D2 coherent dynamics , both in the the collective excitation regime and in the crossover with the single-particle one.

Principal Investigator: Dr Daniele Colognesi
Local Contact: Dr Tatiana Guidi
Experimenter: Dr Eleonora Guarini
Experimenter: Dr Ubaldo Bafile
Experimenter: Dr Stefano Bellissima
Experimenter: Dr Milva Celli
Experimenter: Professor Martin Neumann

DOI: 10.5286/ISIS.E.RB1910036

ISIS Experiment Number: RB1910036

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 Daniele Colognesi et al; (2019): Collective quantum dynamics in Ne-D2 liquid mixtures, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1910036

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