The measurement of the excitation function for fusion evaporation reactions in the system (40)Ca + (48)Ca (Q = 4.56 MeV) has been extended downward by two orders of magnitude with respect to previous cross section data. A first indication of an S-factor maximum in a system with a positive Q value has been observed. In addition a correlation between fusion hindrance and neutron excess N - Z has been found for the Ca + Ca, Ni + Ni, and Ca + Zr systems.
Fusion hindrance for Ca plus Ca systems: Influence of neutron excess
MONTAGNOLI, GIOVANNA;SCARLASSARA, FERNANDO;
2010
Abstract
The measurement of the excitation function for fusion evaporation reactions in the system (40)Ca + (48)Ca (Q = 4.56 MeV) has been extended downward by two orders of magnitude with respect to previous cross section data. A first indication of an S-factor maximum in a system with a positive Q value has been observed. In addition a correlation between fusion hindrance and neutron excess N - Z has been found for the Ca + Ca, Ni + Ni, and Ca + Zr systems.
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