A4 Article in conference proceedings
Triplet 12B-12C-12N : Search for States with Halo (2020)

Danilov, A. N., Demyanova, A. S., Ogloblin, A. A., Goncharov, S. A., Belyaeva, T. L., & Trzaska, W. H. (2020). Triplet 12B-12C-12N : Search for States with Halo. In NN2018 : Proceedings of 13th International Conference on Nucleus-Nucleus Collisions (Article 010031). Physical Society of Japan. JPS Conference Proceedings, 32. https://doi.org/10.7566/jpscp.32.010031

JYU authors or editors

Publication details

All authors or editors: Danilov, Andrey N.; Demyanova, Alla S.; Ogloblin, Alexey A.; Goncharov, Sergey A.; Belyaeva, Tatiana L.; Trzaska, Wladislaw H.

Parent publication: NN2018 : Proceedings of 13th International Conference on Nucleus-Nucleus Collisions

Place and date of conference: Saitama, Japan, 4.-8.12.2018

ISBN: 978-4-89027-145-0

Journal or series: JPS Conference Proceedings

ISSN: 2435-3892

Publication year: 2020

Number in series: 32

Article number: 010031

Publisher: Physical Society of Japan

Publication country: Japan

Publication language: English

DOI: https://doi.org/10.7566/jpscp.32.010031

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/71195


Previously in [1] neutron halo was confirmed for the 2¯, 1.67 MeV and 1¯, 2.62 MeV states in 12B on base of Asymptotic Normalization Coefficients (ANC) method analysis of the obtained experimental data. An unexpected result was received for the unbound 3¯, 3.39 MeV state. Its halo radius was found to be increased and equal to ~5.9 fm. This result can be considered as an evidence of the halo-like structure in this 12B state. It should be noted that last neutron in this state has a non-zero orbital momentum (l = 2). So question arises about possible existence of states with halo in other members of the isobaric triplet 12B–12C–12N. We can expect the formation of a proton halo in the 2¯, 1.19 MeV and 1¯, 1.80 MeV states of 12N and 2¯, 16.62 MeV and 1¯, 17.23 MeV states of 12C. To check this prediction preliminary Modified Diffraction Model (MDM) analysis of existing (3He, t) and (3He, 3He′) experimental data was done.

Free keywords: asymptotic normalization coefficients, neutron and proton halo; MDM model; radii of excited states

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2020

JUFO rating: 1

Last updated on 2021-07-07 at 21:36