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Title: Modelling the mobility of positive ion clusters in normal liquid helium over large pressure ranges
Authors: Aitken, F.
Bonifaci, N.
Mendoza Luna, Luis Guillermo
von Haeften, Klaus
First Published: 22-Jun-2015
Publisher: Royal Society of Chemistry
Citation: Physical Chemistry Chemical Physics 2015
Abstract: Positively charged helium clusters, also called ‘snowballs’, have been investigated within normal liquid helium. Thermodynamic state equations for ionic helium clusters in liquid helium have been developed, allowing us to discern the ‘hydrodynamic’ radius for a wide range of hydrostatic pressures and temperatures. The mobilities derived from the cluster sizes using stokes law match experimental data with unsurpassed accuracy. For low pressures the compressibility of the cluster ions was found to be distinctly larger than the compressibility of solid helium suggesting that in this pressure range clusters are fully or partially liquid.
DOI Link: 10.1039/C5CP02539G
ISSN: 1463-9076
eISSN: 1463-9084
Version: Post-print
Status: Peer-reviewed
Type: Journal Article
Rights: Archived with reference to SHERPA/RoMEO and publisher website. Copyright 2015 The Royal Society of Chemistry. Version of record:
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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