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Energies and density distributions of (4He)N clusters doped with Br2(X): A Hartree-like approach

AuthorsLara Castells, María Pilar de ; López-Durán, David ; Delgado Barrio, Gerardo ; Villarreal, Pablo ; Paola, C. di; Gianturco, Franco A.; Jellinek, J.
Issue Date8-Mar-2005
PublisherAmerican Physical Society
CitationPhysical review A 71: 033203 (2005)
AbstractEnergies and density distributions of the helium atoms in Br2(X) - (4He)N clusters are calculated using a quantum >Hartree-like> approach in which the dopant molecule and the 4He atoms play the role of the nuclei and electrons, respectively, of the original Hartree formulation. A detailed generalization of the methodology is presented. The validity of this treatment is assessed by comparing energies and density distributions for N =2 up to N=18 with those obtained by performing quantum diffusion Monte Carlo (DMC) calculations. The present Hartree model shows good agreement with the DMC calculations, the main difference being that the DMC density distributions of the He atoms are more isotropic than those generated via the model. The treatment is extended to larger (up to N=60) clusters and saturation effects are analyzed and discussed. ©2005 The American Physical Society.
Description10 págs.; 8 figs.; 2 tabs.; PACS numberssd: 36.40.Mr, 31.15.Ar, 33.20.Fb, 33.80.Gj
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevA.71.033203
Identifiersdoi: 10.1103/PhysRevA.71.033203
issn: 1050-2947
Appears in Collections:(CFMAC-IFF) Artículos
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