Breakup and n -transfer effects on the fusion reactions Li6,7+Sn120,119 around the Coulomb barrier
| Autor: | J. Lubian, J. P. Fernández-García, A. C. Shotter, M. G. Pellegriti, D. Torresi, Chris Ruiz, Maria Fisichella, A. Musumarra, Valentina Scuderi, P. Lotti, E. Strano, P. Figuera, M. Lattuada, Mile Zadro, A. Di Pietro, J. L. Ferreira |
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| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Physical Review C. 95 |
| ISSN: | 2469-9993 2469-9985 |
| DOI: | 10.1103/physrevc.95.034617 |
| Popis: | This paper presents values of complete fusion cross sections deduced from activation measurements for the reactions $\phantom{\rule{0.16em}{0ex}}^{6}\mathrm{Li}+\phantom{\rule{0.16em}{0ex}}^{120}\mathrm{Sn}$ and $\phantom{\rule{0.16em}{0ex}}^{7}\mathrm{Li}+\phantom{\rule{0.16em}{0ex}}^{119}\mathrm{Sn}$, and for a projectile energy range from 17.5 to 28 MeV in the center-of-mass system. A new deconvolution analysis technique is used to link the basic activation data to the actual fusion excitation function. The complete fusion cross sections above the barrier are suppressed by about $70%$ and $85%$ with respect to the universal fusion function, used as a standard reference, in the $\phantom{\rule{0.16em}{0ex}}^{6}\mathrm{Li}$ and $\phantom{\rule{0.16em}{0ex}}^{7}\mathrm{Li}$ induced reactions, respectively. From a comparison of the excitation functions of the two systems at energies below the barrier, no significant differences can be observed, despite the two systems have different $n$-transfer $Q$ values. This observation is supported by the results of coupled reaction channels (CRC) calculations. |
| Databáze: | OpenAIRE |
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