Sub-barrier fusion of Si+Si systems (CROSBI ID 660903)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Colucci, G. ; Montagnoli, G. ; Stefanini, A.M. ; Bourgin, D. ; Čolović, Petra ; Corradi, L. ; Courtin, S. ; Faggian, M. ; Fioretto, E. ; Galtarossa, F. ; Goasduff, A. ; Haas, F. ; Mazzocco, M. ; Scarlassara, F. ; Stefanini, C. ; Strano, E. ; Urbani, M. ; Szilner, Suzana ; Zhang, G.L.
engleski
Sub-barrier fusion of Si+Si systems
he near- and sub-barrier fusion excitation function has been measured for the system 30Si+30Si at the Laboratori Nazionali di Legnaro of INFN, using the 30Si beam of the XTU Tandem accelerator in the energy range 47 - 90 MeV. A set-up based on a beam electrostatic deflector was used for detecting fusion evaporation residues. The measured cross sections have been compared to previous data on 28Si+28Si and Coupled Channels (CC) calculations have been performed using M3Y+repulsion and Woods-Saxon potentials, where the lowlying 2+ and 3− excitations have been included. A weak imaginary potential was found to be necessary to reproduce the low energy 28Si+28Si data. This probably simulates the effect of the oblate deformation of this nucleus. On the contrary, 30Si is a spherical nucleus, 30Si+30Si is nicely fit by CC calculations and no imaginary potential is needed. For this system, no maximum shows up for the astrophysical S-factor so that we have no evidence for hindrance, as confirmed by the comparison with CC calculations. The logarithmic derivative of the two symmetric systems highlights their different low energy trend. A difference can also be noted in the two barrier distributions, where the high-energy peak present in 28Si+28Si is not observed for 30Si+30Si, probably due to the weaker couplings in last case.
nuclear reaction ; nuclear fusion
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o prilogu
00010
2017.
objavljeno
10.1051/epjconf/201716300010
Podaci o matičnoj publikaciji
EPJ Web of Conferences, volume 163 (2017) FUSION17
Simpson, Edward ; Simenel, Cedrik ; Cook, Kaitlin : Carter, Ian
EDP Sciences
2100-014X
Podaci o skupu
FUSION17 : International Conference on Heavy-Ion Collisions at Near-Barrier Energies
predavanje
20.02.2017-24.02.2017
Hobart, Australija