NEW CASES OF HALO IN ISOBAR-ANALOG STATES

Demyanova A.S. Danilov A.N. Dmitriev S.V. Starastsin V.I. Goncharov S.A. Burtebayev N. Janseitov D.M.
2021 Jagiellonian University

Acta Physica Polonica B, Proceedings Supplement
2021 #14 Issue 4 775 - 780 pp.

The purpose of this research is to search and study halo in isobar-analog states of light nuclei. The study of states with a halo in isobar analogs allows one to investigate the manifestation of isotopic invariance at new objects and to relate the properties of the neutron and proton halo. The question of the existence of halo in isobar-analog states has so far not been practically raised in the experimental plan. The proposed approach is based on measuring the radii of states in which the halo exists or can exist. The data on the radii can give new information for solving the long-standing problem of a single description of the halo in both parts of the spectrum - discrete and continuous. We propose to solve problem: experimentally determine the radii of a number of states in which there can be a halo in nuclei, forming isobar-analog doublets and triplets. We have discovered new possible candidates for a halo in the isobar-analog multiplets A = 12 and A = 14. First, most of the states lie in the continuous spectrum. Second, the results were obtained within the framework of two independent methods: ANC and MDM. A great achievement was the development of the ANC method for studying resonance states, which made it possible to identify new cases of a proton halo in isobaric analog states.

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National Research Centre, Kurchatov Institute, Moscow, 123182, Russian Federation
Lomonosov Moscow State University, Moscow, 119991, Russian Federation
Institute of Nuclear Physics, Almaty, 050032, Kazakhstan
Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
JINR, Moscow Region, Dubna, 141700, Russian Federation

National Research Centre
Lomonosov Moscow State University
Institute of Nuclear Physics
Al-Farabi Kazakh National University
JINR

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