Possible neutron and proton halo structure in the isobaric analog states of A=12 nuclei
Demyanova, A. S., Starastsin, V. I., Danilov, A. N., Ogloblin, A.A., Dmitriev, S. V., Goncharov, S. A., Belyaeva, T. L., Maslov, V. A., Sobolev, Y. G., Trzaska, W., Heikkinen, P., Gurov, G. P., Burtebaev, N., & Janseitov, D. (2020). Possible neutron and proton halo structure in the isobaric analog states of A=12 nuclei. Physical Review C, 102(5), Article 054612. https://doi.org/10.1103/physrevc.102.054612
Julkaistu sarjassa
Physical Review CTekijät
Päivämäärä
2020Tekijänoikeudet
© 2020 American Physical Society
The differential cross sections of the 11B(3He,d)12C reaction leading to formation of the 0+ ground state and the 15.11-MeV 1 +, 16.57-MeV 2−, and 17.23-MeV 1− excited states of 12C are measured at Elab=25 MeV. The analysis of the data is carried out within the coupled-reaction-channels method for the direct proton transfer to the bound and unbound states. The rms radii of the last proton in all states studied are determined. A comparison of the rms radii of the 12B, 12C, and 12N nuclei in the isobaric analog states (IASs) with isospin T=1 determined by different methods allows us to arrive at a conclusion that these nuclei in the 1− excited states at Ex=2.62, 17.23, and 1.80 MeV, respectively, possess one-nucleon (neutron or proton) halo structure. The enlarged radii and a large probability of the last neutron to be outside of the range of the interaction potential are also found for the 2− states of 12B, 12C, and 12N at Ex=1.67, 16.57, and 1.19 MeV, respectively. These IASs also can be regarded as candidates for states with one-nucleon (neutron or proton) halo.
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Julkaisija
American Physical Society (APS)ISSN Hae Julkaisufoorumista
2469-9985Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/47234959
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This work was supported by Russian Science Foundation Grant No. 18-12-00312 (Russia).Lisenssi
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