Fusion of124,132Sn with40,48Ca

Microscopic analysis of sub-barrier fusion enhancement in132Sn+40Ca versus132SnOberacker1, Umar2 2013Phys. Rev. C323460View full textAdd to dashboardCite

“…In several experiments, large enhancements of sub-barrier fusion yields have been observed for systems with positive Q values for neutron transfer. Recently, at the HRIBF facility a series of experiments has been carried out with radioactive 132 Sn beams and with stable 124 Sn beams on 40,48 Ca targets [1]. It turns out that the 40 Ca+Sn systems have many positive Q values for neutron-pickup while all the Q values for 48 Ca+Sn are negative.…”

Examining the role of transfer coupling in sub-barrier fusion ofTi46,50+Sn124

“…5 [12,13], and (f) 58,64 Ni+ 132 Sn [10,11] are compared where the reaction energy is shown on a reduced scale using the barrier height predicted by the frozen HF. the larger sub-barrier fusion enhancement has in the past been attributed to the coupling to neutron transfer [5,7,8,26]. However, if the the same reasoning is applied to 58 Ni and 64 Ni induced fusion on 124 Sn and 132 Sn then the sub-barrier fusion enhancement is expected to be larger for 58 Ni induced reactions.…”

“…The measurement of the fusion excitation function for 40 Ca+ 132 Sn found a very large sub-barrier fusion enhancement compared to the fusion of 48 Ca+ 132 Sn [5]. Coupled-channels calculations considering the inelastic excitations to the lowest 2 + and 3 − states of the participating nuclei were able to reproduce the excitation function for 48 Ca+ 132 Sn but severely underpredicted the excitation function for 40 Ca+ 132 Sn.…”

“…Coupled-channels calculations considering the inelastic excitations to the lowest 2 + and 3 − states of the participating nuclei were able to reproduce the excitation function for 48 Ca+ 132 Sn but severely underpredicted the excitation function for 40 Ca+ 132 Sn. Because the Q-values for groundstate transfer of up to 14 neutrons from 132 Sn to 40 Ca are positive and all the ground state to ground-state transfer Q-values (Q gg ) for 48 Ca+ 132 Sn are negative, the large sub-barrier fusion enhancement in 40 Ca+ 132 Sn was attributed to the couplings to transfer [5]. Likewise, a large sub-barrier fusion enhancement observed in 40 Ca+ 134 Te was also attributed to the same mechanisms [6].…”

Breakup and n -transfer effects on the fusion reactions Li6,7+Sn120,Fisichella1, Shotter2, Фігуера3 et al. 2017Phys. Rev. C19030View full textAdd to dashboardCite

“…For example, enhanced fusion cross sections have been observed for 28 Si + 94 Zr [10], 32 S + 96 Zr, 110 Pd [11,12] and 40 Ca + 48 Ca, 96 Zr, 124,132 Sn [13][14][15][16] systems compared to their isotopic counterparts characterized by lower Q values for neutron transfer. However, the fusion excitation functions for systems like Sn+Ni, Te+Ni [17], O+Ge [18], and Ni+Mo [19] do not show significant differences, when different isotopes of the colliding nuclei are considered, even though the systems present very different Q values for multineutron transfer channels.…”