Title
Hookean atom with four electrons : on the formation of a tetrahedral Wigner molecule in the weak trapping limitHookean atom with four electrons : on the formation of a tetrahedral Wigner molecule in the weak trapping limit
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Department of Physics
Publication type
article
Publication
Lancaster, Pa,
Subject
Physics
Source (journal)
Physical review : A : atomic, molecular and optical physics. - Lancaster, Pa, 1990 - 2015
Volume/pages
83(2011):4, p. 0448502,1-044502,4
ISSN
1094-1622
1050-2947
ISI
000290105300012
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Numerical results are presented on states 5Su and 3Pg of the Hookean atom with four electrons. Using standard ab initio quantum chemistry methods, the quintet configuration is shown to be the ground state for the weak harmonic trapping constant k. For large k values, there is a crossover to the triplet 3Pg ground state. Finally, it is concluded that the Coulombic potential energy approaches the localized electron limit of a tetrahedral Wigner molecule as the harmonic force constant k tends to zero.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/bcbe3d/25825941.pdf
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