Entrance channel effects in medium mass nuclear systems at 25 MeV/nucleon

International Symposium on Entrance Channel Effect on the Reaction Mechanism in Heavy Ion Collisions

Lombardo, I.^1 ; Acosta, L.^2 ; Agodi, C.^2 ; Amorini, F.^2 ; Anzalone, A.^2 ; Auditore, L.^5 ; Berceanu, I.^8 ; Cardella, G.^3 ; Chatterjee, M.B.^7 ; Filippo, E De^3 ; Geraci, E.^3,4 ; Giuliani, G.^9 ; Grassi, L.^10 ; Han, J.^2 ; Guidara, E La^3 ; Lanzalone, G.^2,6 ; Loria, D.^5 ; Maiolino, C.^2 ; Minniti, T.^5 ; Pagano, A.^3 ; Papa, M.^3 ; Pirrone, S.^3 ; Politi, G.^3,4 ; Porto, F.^2,4 ; Rizzo, F.^2,4 ; Rosato, E.^1 ; Russotto, P.^2 ; Trifirò, A.^5 ; Trimarchi, M.^5 ; Verde, G.^3 ; Vigilante, M.^1

Dipartimento di Fisica, Università di Napoli Federico II, INFN-Sezione di Napoli, Via Cintia, I-80126, Napoli, Italy^1

INFN-Laboratori Nazionali Del Sud, Via S. Sofia, Catania, Italy^2

INFN-Sezione di Catania, Via S. Sofia, Catania, Italy^3

Dipartimento di Fisica e Astronomia, Università di Catania, Via S. Sofia, Catania, Italy^4

Dipartimento di Fisica, Universita di Messina, INFN-Gr.Coll., Messina, Italy^5

Facolta di Ingegneria Ed Architettura, Universita Kore di Enna, Enna, Italy^6

Saha Institute of Nuclear Physics, Kolkata, India^7

Institute for Physics and Nuclear Engineering, Bucharest, Romania^8

Texas AandM University, College Station, TX, United States

(10) Ruder Boskovic Insitute, Zagreb, Croatia^9

关键词: Channel effect;    Multi-detectors;    Neutron excess;    Neutron-rich systems;    Nuclear systems;    Relative emission;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/515/1/012013/pdf
DOI  :  10.1088/1742-6596/515/1/012013

来源: IOP

【 摘 要 】

We discuss experimental data concerning48Ca+48Ca and42Ca+54Fe reactions at 25 MeV/nucleon obtained by using the 4π multi-detector Chimera. Effects due due to the different neutron to proton ratios (N/Z) of the two systems have been investigated. Charge distributions of forwardly emitted fragments show even-odd staggering whose amplitude is larger for the neutron poor system. Moreover, the neutron excess of the total system influence the evolution of fusion-like sources formed in semi-central collisions. In particular, for the neutron rich system, the relative emission yield of heavy residues is larger, while multi-fragmentation and binary-like events prevail in the neutron poor system.