Magic numbers and stabilities of heavy water clusters, (D2O)ND+, N = 3 −48

[Display omitted] •Determines the stabilities of heavy water clusters.•Slightly smaller magicity of the N = 21 cluster compared to normal water.•No difference observed for N = 28: The difference ascribed to the special geometric structure of the N = 21 cluster. The abundance spectrum of deuterated h...

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Bibliographic Details
Published in:International journal of mass spectrometry 2019-06, Vol.440, p.14-19
Main Authors: Hansen, K., Ryding, M.J., Uggerud, E.
Format: Article
Language:English
Subjects:
Atom and Molecular Physics and Optics
Atom- och molekylfysik och optik
Binding energies
Clusters
Fysikalisk kemi
Heavy water
Physical Chemistry
Unimolecular reactions
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Summary:[Display omitted] •Determines the stabilities of heavy water clusters.•Slightly smaller magicity of the N = 21 cluster compared to normal water.•No difference observed for N = 28: The difference ascribed to the special geometric structure of the N = 21 cluster. The abundance spectrum of deuterated heavy water clusters has been measured, and relative dissociation energies were extracted from the abundances. The dissociation energies are similar to those of protonated light water clusters, except for a slightly reduced excess stability of the N = 21 cluster relative to the N = 22 cluster. The difference is interpreted in terms of the special geometry of the N = 21 cluster. The absence of a similar effect for N = 28/29 suggests that the stability of the N = 28 cluster is not due to a closed shell structure.
ISSN:1387-3806
1873-2798
DOI:10.1016/j.ijms.2019.03.003