Naslov
Effects of transfer channels on near- and sub- barrier fusion of 32S + 48Ca

Autori
Montagnoli, G. ; Stefanini, A.M. ; Esbensen, H. ; Jiang, C.L. ; Corradi, L. ; Courtin, S. ; Fioretto, E. ; Goasduff, A. ; Grebosz, J. ; Haas, F. ; Mazzocco, M. ; Michelagnoli, C. ; Mijatović, Tea ; Montanari, D. ; Parascandolo, C. ; Rehm, K.E. ; Scarlassara, F. ; Szilner, Suzana ; Tang, X.D. ; Ur, C.A.

Izvornik
Physical Review C (0556-2813) 87 (2013); 014611-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
fusion excitation function; fusion barrier distribution; coupled-channels calculations

Sažetak
The fusion excitation function of 32S + 48Ca has been experimentally studied in a wide energy range, from above the Coulomb barrier down to cross sections in the sub-μb region. The measurements were done at INFN–Laboratori Nazionali di Legnaro, using the 32S beam from the XTU Tandem accelerator. The excitation function has a smooth behavior below the barrier, and no evident hindrance character shows up in the measured energy region. The fusion barrier distribution has a peculiar shape with two distinct peaks of similar height, lower and higher than the Akyüz-Winther barrier. Coupled-channels calculations using the M3Y + repulsion potential are presented for this system and for 36S + 48Ca. The results of these calculations give a good account of the data, and indicate the influence of one- and two-nucleon transfer channels with positive Q values, which are only open for 32S + 48Ca.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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