Slow Nuclear Decoherence: Possibilities to Detect the Decay of Thermalized-Nonequilibrated Matter

Abstract

The statistical reactions with memory approach suggests the possibility of forming thermalized-nonequilibrated matter in nucleon-induced reactions. Unlike the fully equilibrated compound nucleus of Bohr, the decay of the thermalized-nonequilibrated system is characterised by the forward peaking of the evaporating particles and the significant spontaneous channel-channel correlation. This correlation results in the nonself-averaging of the excitation function fluctuations in the evaporation domain of the spectra offering a new possibility to experimentally detect the slow nuclear decoherence and the decay of the thermalized-nonequilibrated matter. The quantitative estimation of the effect for the 93Nb(n,p) reaction at En ≃ 14 MeV yields ≃ 30-40% for the relative magnitude of fluctuations at the maximum, Ep ≃ 6-8 MeV, of the proton evaporation spectrum. Show more