Unbound spectra of neutron-rich oxygen isotopes predicted by the Gamow shell model

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

doi:10.1103/physrevc.103.034305

Unbound spectra of neutron-rich oxygen isotopes predicted by the Gamow shell model

Journal Article · Fri Mar 05 00:00:00 EST 2021 · Physical Review. C

DOI:https://doi.org/10.1103/physrevc.103.034305· OSTI ID:1851240

Li, J. G. ^[1]; ^[2]; Zuo, W. ^[2]; ^[3]

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

The Gamow shell model has shown to efficiently describe weakly bound and unbound nuclear systems, as internucleon correlations and continuum coupling are both taken into account in this model. In the present work, we study neutron-dripline oxygen isotopes. It is hereby demonstrated that the presence of continuum coupling is important for the description of oxygen isotopes at dripline, and especially to assess the eventual bound or unbound character of ²⁸O. Our results suggest that the ground state of ²⁸O is weakly unbound and is similar to the narrow resonant ²⁶O ground state. Predictions of weakly bound and resonance excited states in ^24–26O are also provided. The asymptotes of the studied many-body states are analyzed via one-body densities, whereby the different radial properties of well bound, loosely bound, resonance states are clearly depicted.

View Accepted Manuscript (DOE)

Research Organization:: Peking Univ., Beijing (China); Texas A & M Univ., Commerce, TX (United States)

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

Grant/Contract Number:: SC0009971

OSTI ID:: 1851240

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 3 Vol. 103; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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