Deformed-jellium model for the fission of multiply charged simple metal clusters

F. Garcias, A. Mañanes, J. M. López, J. A. Alonso, and M. Barranco
Phys. Rev. B 51, 1897 – Published 15 January 1995
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Abstract

A deformed-jellium model is used to calculate the fission barrier height of positive doubly charged sodium clusters within an extended Thomas-Fermi approximation. The fissioning cluster is continuously deformed from the parent configuration until it splits into two fragments. Although the shape of the fission barrier obviously depends on the parametrization of the fission path, we have found that remarkably, the maximum of the barrier corresponds to a configuration in which the emerging fragments are already formed and rather well apart. The implication of this finding in the calculation of critical numbers for fission is illustrated in the case of multiply charged Na clusters.

  • Received 25 August 1994

DOI:https://doi.org/10.1103/PhysRevB.51.1897

©1995 American Physical Society

Authors & Affiliations

F. Garcias

  • Departament de Física, Universitat de les Illes Balears, E-07071 Palma de Mallorca, Spain

A. Mañanes

  • Departamento de Física Moderna, Universidad de Cantabria, E-39005 Santander, Spain

J. M. López and J. A. Alonso

  • Departamento de Física Teórica, Universidad de Valladolid, E-47011 Valladolid, Spain

M. Barranco

  • Departament d’ Estructura i Constituents de la Matèria, Facultat de Física, Universitat de Barcelona, Diagonal-647, E-08028 Barcelona, Spain

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Vol. 51, Iss. 3 — 15 January 1995

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