610 articles – 3061 Notices  [english version]
 HAL : in2p3-00736313, version 1
 arXiv : 1209.6164
 11th International Conference on Nucleus-Nucleus Collisions (NN2012), San Antonio : États-Unis (2012)
 Evolution of the decay mechanisms in central collisions of $Xe$ + $Sn$ from $E/A$ = 8 to 29 $MeV$
 A. Chbihi1, L. Manduci2, J. Moisan1, E. Bonnet1, J. D. Frankland1, R. Roy, G. Verde
 (2013)
 Collisions of Xe+Sn at beam energies of $E/A$ = 8 to 29 $MeV$ and leading to fusion-like heavy residues are studied using the $4\pi$ INDRA multidetector. The fusion cross section was measured and shows a maximum at $E/A$ = 18-20 $MeV$. A decomposition into four exit-channels consisting of the number of heavy fragments produced in central collisions has been made. Their relative yields are measured as a function of the incident beam energy. The energy spectra of light charged particles (LCP) in coincidence with the fragments of each exit-channel have been analyzed. They reveal that a composite system is formed, it is highly excited and first decays by emitting light particles and then may breakup into 2- or many- fragments or survives as an evaporative residue. A quantitative estimation of this primary emission is given and compared to the secondary decay of the fragments. These analyses indicate that most of the evaporative LCP precede not only fission but also breakup into several fragments.
 Thème(s) : Physique/Physique Nucléaire Expérimentale
 Lien vers le texte intégral : http://fr.arXiv.org/abs/1209.6164
 in2p3-00736313, version 1 http://hal.in2p3.fr/in2p3-00736313 oai:hal.in2p3.fr:in2p3-00736313 Contributeur : Michel Lion <> Soumis le : Vendredi 28 Septembre 2012, 08:51:38 Dernière modification le : Lundi 22 Avril 2013, 14:23:59