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Modelling the mobility of positive ion clusters in normal liquid helium over large pressure ranges

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journal contribution
posted on 25.06.2015 by F. Aitken, N. Bonifaci, Luis Guillermo Mendoza Luna, Klaus von Haeften
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.
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Funding

K. von Haeften and F. Aitken acknowledge funding by the British Council through the Alliance Programme. K. von Haeften is grateful for financial support through The Leverhulme Trust (Research Grant F00212AH), the Royal Society (International Exchange Grant RP16G0679) and the Universite Joseph Fourier for a Visiting ´ Professorship. Luis Guillermo Mendoza Luna acknowledges financial support from the Mexican Consejo Nacional de Ciencia y Tecnolog´ıa (CONACYT) Scholarship number 310668, ID 215334.

History

Citation

Physical Chemistry Chemical Physics 2015

Author affiliation

/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Physics and Astronomy

Version

AM (Accepted Manuscript)

Published in

Physical Chemistry Chemical Physics 2015

Publisher

Royal Society of Chemistry

issn

1463-9076

eissn

1463-9084

Copyright date

2015

Available date

22/06/2016

Publisher version

http://pubs.rsc.org/en/content/articlehtml/2015/cp/c5cp02539g

Language

en

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