Elastic scattering angular distributions of neutron halo nucleus \(^{11}\)Be studied via dynamic polarization potentials

Abstract

Cluster aspects of the nuclear structure manifest themselves in, among many other types of nuclear reactions, the breakup reactions of weakly-bound nuclei and their couplings with the other reaction channels. In the present work we analyzed the breakup coupling effects to the elastic scattering angular distributions of \(^{11}\)Be with a \(^{208}\)Pb target at an incident energy of 140 MeV. Weighted mean local polarization potentials (WMLPPs), which mimic the dynamic polarization potentials (DPPs) induced by the breakup coupling effects to the elastic scattering channel, were obtained from continuum discretized coupled channel (CDCC) calculations. Suppression of the Coulomb-nuclear interference peaks (CNIPs) of the elastic scattering angular distributions is found to be caused by the destructive interference between the Coulomb and the Coulomb-distorted nuclear amplitude due to the WMLPPs. Comparisons between the WMLPPs and the theoretically calculated Coulomb dipole polarization potentials (CDPPs) suggest that the breakup coupling effect of the \(^{11}\)Be+\(^{208}\)Pb system cannot be represented by the CDPPs alone.

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Data Availability Statement

This manuscript has no associated data or the data will not be deposited. [Authors’ comment: There is no original experimental data presented in this paper. The experimental data displayed in Fig. 2 are firstly presented in Ref. [13].]

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Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (Grant Nos. U2067205 and 11775013). We thank Prof. A.M. Moro for providing us the Coulomb dipole polarization potential of the \(^{11}\)Be+\(^{208}\)Pb system at 140 MeV. We also thank Profs. V. Guimarães and A.M. Moro for helpful suggestions.

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Correspondence to D. Y. Pang.

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Communicated by Nicolas Alamanos.

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Li, Y., Pang, D.Y. Elastic scattering angular distributions of neutron halo nucleus \(^{11}\)Be studied via dynamic polarization potentials. Eur. Phys. J. A 57, 46 (2021). https://doi.org/10.1140/epja/s10050-021-00360-8

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