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<p>A method for analyzing the spectra of isobaric analog multiplets of nuclei has been developed on the basis of the ab initio approach of the no-core shell model. Doublets of <sup>5</sup>He–<sup>5</sup>Li five-nucleon resonant states with excitation energies <i>E</i>* ≤ 30 MeV, total angular momenta <i>J</i> ≤ 5/2, and isospin <i>T</i> = 1/2. For all table levels of these nuclei, the corresponding theoretically calculated levels have been found. The calculations of the differences of the binding energies of isobaric analog pairs and their comparison with experimental data have allowed us to significantly expand the list of reliably established levels of the <sup>5</sup>He and <sup>5</sup>Li nuclei and to prove the need to correct the tables of spectroscopic data.</p>

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Ab Initio Study of Isobaric Analog States of Light Nuclei as a Promising Method for the Enrichment and Examination of Spectroscopic Data

  • 期刊论文

  • 发表日期：

    2025年11月1日

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  • D. M. Rodkin,
  • Yu. M. Tchuvil’sky

摘要

A method for analyzing the spectra of isobaric analog multiplets of nuclei has been developed on the basis of the ab initio approach of the no-core shell model. Doublets of 5He–5Li five-nucleon resonant states with excitation energies E* ≤ 30 MeV, total angular momenta J ≤ 5/2, and isospin T = 1/2. For all table levels of these nuclei, the corresponding theoretically calculated levels have been found. The calculations of the differences of the binding energies of isobaric analog pairs and their comparison with experimental data have allowed us to significantly expand the list of reliably established levels of the 5He and 5Li nuclei and to prove the need to correct the tables of spectroscopic data.