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Fission of doubly charged metal clusters is studied using the open-shell two-center deformed jellium Hartree-Fock model and local density approximation. Results of calculations of the electronic structure and fission barriers for the symmetric and asymmetric channels associated with the following processes Na₁₀²⁺→Na₇⁺+Na₃⁺, Na₁₈²⁺→Na₁₅⁺+Na₃⁺ and Na₁₈²⁺→2Na₉⁺ are presented. The role of the exact exchange and many-body correlation effects in metal clusters fission is analyzed. It is demonstrated that the influence of many-electron correlation effects on the height of the fission barrier is more profound if the barrier arises nearby or beyond the scission point. The importance of cluster deformation effects in the fission process is elucidated with the use of the overlapping-spheroids shape parametrization allowing one an independent variation of deformations in the parent and daughter clusters.
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Lyalin et al. (2002) studied this question.
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