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1990•Physical Review LettersRequires access

Fission and liquid-drop behavior of charged gold clusters

Winston A. Saunders

Open publisher page 120 citations

Abstract

Fragmentation measurements on doubly charged Au clusters show that clusters smaller than 18 atoms decay by fission (i.e., two charged cluster fragments) and neutral-atom evaporation. The fission probability is found to increase relative to the evaporation probability with decreasing cluster size, roughly as an exponential function of ${\mathit{z}}^{2}$/n, where n is the number of atoms in the cluster. The results are found to be in good agreement with an adapted version of the nuclear liquid-drop model.

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What this paper is about

Fragmentation measurements on doubly charged Au clusters show that clusters smaller than 18 atoms decay by fission (i.e., two charged cluster fragments) and neutral-atom evaporation. The fission probability is found to increase relative to the evaporation probability with decreasing cluster size, roughly as an exponential function of ${\mathit{z}}^{2}$/n, where n is the number of atoms in the cluster. The results are found to be in good agreement with an adapted version of the nuclear liquid-drop model.

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Available abstract

Fragmentation measurements on doubly charged Au clusters show that clusters smaller than 18 atoms decay by fission (i.e., two charged cluster fragments) and neutral-atom evaporation. The fission probability is found to increase relative to the evaporation probability with decreasing cluster size, roughly as an exponential function of ${\mathit{z}}^{2}$/n, where n is the number of atoms in the cluster. The results are found to be in good agreement with an adapted version of the nuclear liquid-drop model.

Key concepts: Fission, Semi-empirical mass formula, Cluster decay, Cluster (spacecraft), Drop (telecommunication), Fragmentation (computing), Evaporation, Atomic physics

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