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States of the 12N Nucleus with Increased Radii

  • Fields, Particles, and Nuclei
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Abstract

The differential cross sections for the 12C(3He, t)12N reaction leading to formation of the 1+ (ground state), 2+ (0.96 MeV), 2− (1.19 MeV), and 1− (1.80 MeV) states of 12N are measured at E(3He) = 40 MeV. The analysis of the data is carried out within the modified diffraction model and distorted wave Born approximation. Increased rms radii have been obtained for the ground, 2− (1.19 MeV), and 1− (1.80 MeV) states. We revealed that 12B, 12N, and 12C in the isobaric analogue states with T = 1, and spin-parities 2− and 1− have increased radii and exhibit properties of neutron and proton halo states.

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Funding

This work was supported by the Russian Science Foundation (project no. 18-12-00312) and in part by the Academy of Finland (mobility grant).

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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, S. V. Dmitriev & V. M. Sergeev

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

    W. H. Trzaska & J. Louko

  3. Moscow State University, Moscow, 119991, Russia

    S. A. Goncharov & V. M. Sergeev

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

    T. L. Belyaeva

  5. Flerov Laboratory for Nuclear Research, Joint Institute for Nuclear Research, Dubna, Moscow region, 141980, Russia

    V. A. Maslov, Yu. G. Sobolev, Yu. E. Penionzhkevich & D. Janseitov

  6. Khlopin Radium Institute, St. Petersburg, 194021, Russia

    S. V. Khlebnikov & G. P. Tyurin

  7. Institute of Nuclear Physics, National Nuclear Center of Republic of Kazakhstan, Almaty, 050032, Republic of Kazakhstan

    N. Burtebaev & D. Janseitov

  8. National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, 115409, Russia

    Yu. B. Gurov

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. V. I. Starastsin
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  5. S. V. Dmitriev
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  6. W. H. Trzaska
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  7. S. A. Goncharov
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  8. T. L. Belyaeva
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  9. V. A. Maslov
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  10. Yu. G. Sobolev
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  11. Yu. E. Penionzhkevich
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  12. S. V. Khlebnikov
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  13. G. P. Tyurin
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  14. N. Burtebaev
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  15. D. Janseitov
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  16. Yu. B. Gurov
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  17. J. Louko
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  18. V. M. Sergeev
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Corresponding author

Correspondence to A. S. Demyanova.

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Demyanova, A.S., Danilov, A.N., Ogloblin, A.A. et al. States of the 12N Nucleus with Increased Radii. Jetp Lett. 111, 409–415 (2020). https://doi.org/10.1134/S0021364020080020

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  • DOI: https://doi.org/10.1134/S0021364020080020

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