Radii of the bound states in 16N from the asymptotic normalization coefficients

  • The asymptotic normalization coefficients (ANCs) of the virtual decay 16N→15N+n are extracted from the 15N(7Li, 6Li)16N reaction populating the ground and first three excited states in 16N. The root-mean-square (rms) radii of the valence neutron in these four low-lying 16N states are then derived by using the ANCs. The probabilities of the valence neutron staying out of the core potentials are found to be 31%±8%, 58%±12%, 32%±8%, and 60%±12%. The present results support the conclusion that a one-neutron halo may be formed in the 16N first and third excited states, while the ground and second excited states do not have a one-neutron halo structure. However, the core excitation effect has a strong influence on the one-neutron halo structure of the ground and first excited states in 16N.
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E. T. Li, B. Guo, Z. H. Li, Y. B. Wang, Y. J. Li, Z. D. Wu and J. Su. Radii of the bound states in 16N from the asymptotic normalization coefficients[J]. Chinese Physics C, 2016, 40(11): 114104. doi: 10.1088/1674-1137/40/11/114104
E. T. Li, B. Guo, Z. H. Li, Y. B. Wang, Y. J. Li, Z. D. Wu and J. Su. Radii of the bound states in 16N from the asymptotic normalization coefficients[J]. Chinese Physics C, 2016, 40(11): 114104.  doi: 10.1088/1674-1137/40/11/114104 shu
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Received: 2016-01-18
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    Supported by National Natural Science Foundation of China (11505117, 11490560, 11475264, 11321064, 11375269), Natural Science Foundation of Guangdong Province (2015A030310012), 973 program of China (2013CB834406) National key Research and Development Province (2016YFA0400502)

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Radii of the bound states in 16N from the asymptotic normalization coefficients

    Corresponding author: E. T. Li,
    Corresponding author: B. Guo,
    Corresponding author: Z. H. Li,
  • 1.  College of Physics and Energy, Shenzhen University, Shenzhen 518060, China
  • 2.  China Institute of Atomic Energy, Beijing 102413, China
Fund Project:  Supported by National Natural Science Foundation of China (11505117, 11490560, 11475264, 11321064, 11375269), Natural Science Foundation of Guangdong Province (2015A030310012), 973 program of China (2013CB834406) National key Research and Development Province (2016YFA0400502)

Abstract: The asymptotic normalization coefficients (ANCs) of the virtual decay 16N→15N+n are extracted from the 15N(7Li, 6Li)16N reaction populating the ground and first three excited states in 16N. The root-mean-square (rms) radii of the valence neutron in these four low-lying 16N states are then derived by using the ANCs. The probabilities of the valence neutron staying out of the core potentials are found to be 31%±8%, 58%±12%, 32%±8%, and 60%±12%. The present results support the conclusion that a one-neutron halo may be formed in the 16N first and third excited states, while the ground and second excited states do not have a one-neutron halo structure. However, the core excitation effect has a strong influence on the one-neutron halo structure of the ground and first excited states in 16N.

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