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Search for Signs of Neutron and Proton Halos in the Excited Isobaric Analog States of A = 14 Nuclei

  • Fields, Particles, and Nuclei
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Abstract

The isobaric analog states with isospin T = 1 in triplet of the A = 14 nuclei: 14C, 14N, and 14O, are studied. The signs of a neutron halo in the 1− (6.09 MeV) state of 14C have been revealed earlier by two groups. We confirm this result and study isobaric analog 1− states of neighboring 14N and 14O nuclei. The differential cross sections for the 14C(α, α)14C* (6.09 MeV, 1−) inelastic scattering, the 13C(3He, d)14N* (8.06 MeV, 1−), and the 14N(3He, t)14O* (5.17 MeV, 1−) reactions are analyzed by two methods: the modified diffraction method and the method of asymptotic normalization coefficients. The rms radii for all three mirror nuclei in the studied 1− states are found almost the same: (2.7 ± 0.1) fm for 14C, (2.67 ± 0.07) fm for 14N, and (2.6 ± 0.2) fm for 14O. The signs of the proton halo in the 1− state of 14N are identified for the first time.

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Funding

This work was supported by the Russian Science Foundation, project no. 18-12-00312.

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Authors and Affiliations

  1. National Research Center Kurchatov Institute, Moscow, 123182, Russia

    A. S. Demyanova, A. N. Danilov, A. A. Ogloblin & V. I. Starastsin

  2. Moscow State University, Moscow, 119991, Russia

    S. A. Goncharov

  3. Universidad Autónoma del Estado de México, Toluca, 50000, México

    T. L. Belyaeva

  4. Department of Physics, University of Jyväskylä, Jyväskylä, FI-40014, Finland

    W. H. Trzaska

Authors
  1. A. S. Demyanova
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  2. A. N. Danilov
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  3. A. A. Ogloblin
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  4. S. A. Goncharov
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  5. T. L. Belyaeva
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  6. W. H. Trzaska
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  7. V. I. Starastsin
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Correspondence to A. S. Demyanova.

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Demyanova, A.S., Danilov, A.N., Ogloblin, A.A. et al. Search for Signs of Neutron and Proton Halos in the Excited Isobaric Analog States of A = 14 Nuclei. Jetp Lett. 112, 463–470 (2020). https://doi.org/10.1134/S0021364020200011

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  • DOI: https://doi.org/10.1134/S0021364020200011

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