Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 126, Issue 12, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2711813
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The local order around alkali (Li+ and Na+) and alkaline-earth (Be+, Mg+, and Ca+) ions in He-4 clusters has been studied using ground-state path integral Monte Carlo calculations. The authors apply a criterion based on multipole dynamical correlations to discriminate between solidlike and liquidlike behaviors of the He-4 shells coating the ions. As it was earlier suggested by experimental measurements in bulk He-4, their findings indicate that Be+ produces a solidlike (snowball) structure, similar to alkali ions and in contrast to the more liquidlike He-4 structure embedding heavier alkaline-earth ions. (c) 2007 American Institute of Physics.
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