Rearrangement of cluster structure during fission processes

Andrey G. Lyalin, Oleg I. Obolensky, Andrey V. Solov'yov, Ilia Solov'yov, Walter Greiner

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Abstrakt

Results of molecular dynamics simulations of fission reactions $Na_10^2+ -->Na_7^++ Na_3^+ and Na_18^2+--> 2Na_9^+ are presented. The dependence of the fission barriers on the isomer structure of the parent cluster is analysed. It is demonstrated that the energy necessary for removing homothetic groups of atoms from the parent cluster is largely independent of the isomer form of the parent cluster. The importance of rearrangement of the cluster structure during the fission process is elucidated. This rearrangement may include transition to another isomer state of the parent cluster before actual separation of the daughter fragments begins and/or forming a 'neck' between the separating fragments.
OriginalsprogEngelsk
TidsskriftJournal of Physics B: Atomic, Molecular and Optical Physics
Vol/bind37
Sider (fra-til)L7-L13
ISSN0953-4075
StatusUdgivet - 2004

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