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Deformed-jellium model for the fission of multiply charged metal clusters
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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.
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GARCIAS, Francisca, et al. Deformed-jellium model for the fission of multiply charged metal clusters. Physical Review B. 1995. Vol. 51, num. 3, pags. 1897-1901. ISSN 0163-1829. [consulted: 7 of October of 2026]. Available at: https://hdl.handle.net/2445/10590