Extending the nuclear chart by continuum: From oxygen to titanium

Xiaoying Qu, Ying Chen, Shuangquan Zhang, Pengwei Zhao, Ik Jae Shin, Yeunhwan Lim, Youngman Kim, Jie Meng

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27 Scopus citations


Nuclear masses ranging from O to Ti isotopes are systematically investigated with relativistic continuum Hartree-Bogoliubov (RCHB) theory, which can provide a proper treatment of pairing correlations in the presence of the continuum. From O to Ti isotopes, there are 402 nuclei predicted to be bound by the density functional PC-PK1. For the 234 nuclei with mass measured, the root mean square (rms) deviation is 2.23 MeV. It is found that the proton drip-lines predicted with various mass models are roughly the same and basically agree with the observation. The neutron drip-lines predicted, however, are quite different. Due to the continuum couplings, the neutron drip-line nuclei predicted are extended further neutron-rich than other mass models. By comparison with finite-range droplet model (FRDM), the neutron drip-line nucleus predicted by RCHB theory has respectively 2(O), 10(Ne), 10(Na), 6(Mg), 8(Al), 6(Si), 8(P), 6(S), 14(K), 10(Ca), 10(Sc), and 12(Ti) more neutrons.

Original languageEnglish
Pages (from-to)2031-2036
Number of pages6
JournalScience China: Physics, Mechanics and Astronomy
Issue number11
StatePublished - Nov 2013


  • O to Ti isotopes
  • nuclear mass table
  • relativistic continuum Hartree-Bogouliubov theory


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