Abstract
We investigate the Coulomb breakup of \(^{11}\)Be halo nuclei on a heavy target (\(^{208}\)Pb) from intermediate (70 MeV/nucleon) to low energies (5 MeV/nucleon) within the non-perturbative semiclassical and quantum-quasiclassical time-dependent approaches. The convergence of the computational scheme is demonstrated in this energy range including n + \(^{10}\)Be low-lying resonances in different partial and spin states. We have found a considerable contribution of the \(5/2^{+}\) resonance (\(E_{r}\) = 1.23 MeV) to the breakup cross section at 30 MeV/nucleon and lower, while at higher energies, the resonant states \(3/2^{-}\) and \(3/2^{+}\) (with \(E_{r}\) = 2.78 and 3.3 MeV) make most visible contributions. The obtained results are in good agreement with experimental data available at 69 and 72 MeV/nucleon. Comparison with the existing theoretical calculations of other authors for 20 and 30 MeV/nucleon is also made. The developed computational scheme opens new possibilities in the investigation of the Coulomb, as well as nuclear, breakup of other halo nuclei on heavy and light targets.
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Acknowledgements
We acknowledge valuable discussion with Prof. S. N. Ershov. The work was supported by the Grant of Ministry of Science and Higher Education of the Russian Federation No. 075-10-2020-117.
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Communicated by A. Rios Huguet.
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Valiolda, D., Janseitov, D. & Melezhik, V. Investigation of low-lying resonances in breakup of halo nuclei within the time-dependent approach. Eur. Phys. J. A 58, 34 (2022). https://doi.org/10.1140/epja/s10050-022-00684-z
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DOI: https://doi.org/10.1140/epja/s10050-022-00684-z