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Fusion reactions including weakly-bound and halo nuclei around Coulomb barrier

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Abstract

In this study, we investigate fusion cross sections including halo and weakly-bound nuclei around Coulomb barrier. We reviewed our previous results for the total fusion cross sections of the \(^{6}\)He+ \({}^{209}\)Bi, \(^{11}\)Li+ \({}^{208}\)Pb and \(^{14,15}\)C+ \({}^{232}\)Th systems, which involve well-known halo nuclei. Then, to analyze the total fusion reaction of neutron-rich nuclei, \(^{9}\)Li + \(^{70}\)Zn system, we introduced the coupled channel method for a two-neutron transfer in the fusion reaction practically. To study the neutron-rich projectile nucleus of this system (\(^{9}\)Li), we constructed a folding potential with projectile and target densities using charge density distribution. Finally, we analyzed the fusion cross section of the \(^{9}\)Li + \(^{70}\)Zn system in one or two channel coupled manners. By adjusting the coupling strength and effective Q-value of the coupling form factor, we successfully reproduced the experimental fusion cross-section data for this system. Our results indicate that the two-neutron transfer channel plays a critical role in the fusion reactions of neutron-rich nuclei, such as \(^{9}\)Li nuclei at energies around the Coulomb barrier.

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Acknowledgements

The authors wish to express their sincere gratitude to Professor K. Hagino for providing valuable comments. This work was supported by the National Research Foundation of Korea (Grant No. NRF-2021R1F1A1051935).

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Authors and Affiliations

  1. Department of Physics and Origin of Matter and Evolution of Galaxy (OMEG) Institute, Soongsil University, Seoul, 06978, Korea

    Kyoungsu Heo

  2. School of Liberal Arts and Science, Korea Aerospace University, Koyang, 10540, Korea

    Ki-Seok Choi

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  1. Kyoungsu Heo
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Correspondence to Ki-Seok Choi.

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Heo, K., Choi, KS. Fusion reactions including weakly-bound and halo nuclei around Coulomb barrier. J. Korean Phys. Soc. 82, 522–529 (2023). https://doi.org/10.1007/s40042-023-00718-9

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