A1 Journal article (refereed)
Possible neutron and proton halo structure in the isobaric analog states of A=12 nuclei (2020)

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

JYU authors or editors

Publication details

All authors or editorsDemyanova, A. S.; Starastsin, V. I.; Danilov, A. N.; Ogloblin, A. A.; Dmitriev, S. V.; Goncharov, S. A.; Belyaeva, T. L.; Maslov, V. A.; Sobolev, Yu. G.; Trzaska, W.; et al.

Journal or seriesPhysical Review C



Publication year2020

Publication date30/11/2020


Issue number5

Article number054612

PublisherAmerican Physical Society (APS)

Publication countryUnited States

Publication languageEnglish


Publication open accessNot open

Publication channel open access

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/72985


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.

Keywordsnuclear physics

Free keywordscoulomb energies and analogue states

Contributing organizations

Ministry reportingYes

Reporting Year2020

JUFO rating2

Last updated on 2024-03-04 at 20:36