Nonequilibrium information entropy approach to ternary fission of actinides

Ternary fission of actinides probes the state nucleus at scission. Light clusters are produced in space and time very close to scission point. Within nonequilibrium statistical operator method, a generalized Gibbs distribution is constructed from information given by observed yields isotopes. Using this relevant operator, calculated taking excited states continuum correlations into account, accordance with virial expansion equation state. Clusters mass number $A\ensuremath{\le}10$ well described using generalizations temperature chemical potentials. Improving expansion, in-medium effects may become importance determining contribution weakly bound intrinsic partition function. Yields larger clusters, which fail reach quasiequilibrium form distribution, nucleation kinetics, saddle-to-scission relaxation about 7000 fm/c inferred. Light-charged particle emission, reaction kinetics expansions, therefore be regarded as important tool probe evolution actinide nuclei during fission.