\alpha-clustering effects in dissipative 12C+12C reactions at 95 MeV

TL;DR

This study investigates -clustering effects in dissipative 12C+12C reactions at 95 MeV, revealing deviations from statistical models due to persistent cluster correlations in evaporation residues.

Contribution

It provides experimental evidence of -clustering effects at high excitation energies in 12C+12C reactions, highlighting deviations from purely statistical evaporation models.

Findings

Observation of deviations in  yields from statistical predictions

Identification of persistent cluster correlations above 24Mg decay threshold

Extraction of isotopic distributions of evaporation residues

Abstract

Dissipative 12C+12C reactions at 95 MeV are fully detected in charge with the GARFIELD and RCo apparatuses at LNL. A comparison to a dedicated Hauser-Feshbach calculation allows to select events which correspond, to a large extent, to the statistical evaporation of highly excited 24Mg, as well as to extract information on the isotopic distribution of the evaporation residues in coincidence with their complete evaporation chain. Residual deviations from a statistical behaviour are observed in \alpha yields and attributed to the persistence of cluster correlations well above the 24Mg threshold for 6 \alpha's decay.