Proton decays in 16Ne and 18Mg and isospin-symmetry breaking in carbon isotopes and isotones

Michel, Nicolas; Li, J. G.; Xu, F. R.; Zuo, W.

doi:10.1103/physrevc.103.044319

Proton decays in ¹⁶Ne and ¹⁸Mg and isospin-symmetry breaking in carbon isotopes and isotones

Journal Article · Wed Apr 28 00:00:00 EDT 2021 · Physical Review. C

DOI:https://doi.org/10.1103/physrevc.103.044319· OSTI ID:1851241

^[1]; ^[2]; Xu, F. R. ^[2]; Zuo, W. ^[3]

Chinese Academy of Sciences (CAS), Lanzhou (China); Univ. of Chinese Academy of Sciences, Beijing (China); OSTI
Peking Univ., Beijing (China)
Chinese Academy of Sciences (CAS), Lanzhou (China); Univ. of Chinese Academy of Sciences, Beijing (China)

We report that proton-rich nuclei possess unique properties in the nuclear chart. Due to the presence of both continuum coupling and Coulomb interaction, phenomena such as halos, Thomas-Ehrman shift, and proton emissions can occur. Relevant experimental data are difficult to obtain, so that theoretical calculations are needed to understand nuclei at drip lines and to guide experimentalists. In particular, the ¹⁶Ne and ¹⁸Mg isotopes are supposed to be one-proton and/or two-proton emitting nuclei, but associated experimental data are either incomplete or even unavailable. Consequently, we performed Gamow shell model calculations of carbon isotones bearing A = 15 - 18 . Isospin-symmetry breaking occurring in carbon isotones and isotopes is also discussed. It is hereby shown that the mixed effects of continuum coupling and Coulomb interaction at drip lines generate complex patterns in isospin multiplets. Added to that, it is possible to determine the one-proton and two-proton widths of ¹⁶Ne and ¹⁸ Mg . Obtained decay patterns are in agreement with those obtained in previous experimental and theoretical works. Moreover, to our knowledge, this is the first theoretical calculation of binding energy and partial decay widths of ¹⁸Mg in a configuration interaction picture.

View Accepted Manuscript (DOE)

Research Organization:: Chinese Academy of Sciences (CAS), Lanzhou (China); Texas A & M Univ., Commerce, TX (United States)

Sponsoring Organization:: Chinese Academy of Sciences; National Key R&D Program of China; National Natural Science Foundation of China; Peking Univ.; USDOE Office of Science (SC)

Grant/Contract Number:: SC0009971

OSTI ID:: 1851241

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 4 Vol. 103; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Proton decays in 16Ne and 18Mg and isospin-symmetry breaking in carbon isotopes and isotones

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References (75)

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Proton decays in ¹⁶Ne and ¹⁸Mg and isospin-symmetry breaking in carbon isotopes and isotones