期刊
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
卷 56, 期 11, 页码 2031-2036出版社
SCIENCE PRESS
DOI: 10.1007/s11433-013-5329-5
关键词
relativistic continuum Hartree-Bogouliubov theory; nuclear mass table; O to Ti isotopes
资金
- Major State Basic Research Development Program of China [2013CB834400]
- National Natural Science Foundation of China [11335002, 11345004, 11375015, 11105005, 11105006, 11175002]
- China Postdoctoral Science Foundation [2012M520101, 2013T60022]
- Research Fund for the Doctoral Program of Higher Education [20110001110087]
- Young Core Instructor and Domestic Visitor Foundation from the Wuhan Center of Teacher Education Exchange
- Rare Isotope Science Project
- Ministry of Science, ICT and Future Planning (MSIP)
- National Research Foundation of Korea
- National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2010-0023661]
- National Research Foundation of Korea [2010-0023661] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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.
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