Journal
PHYSICAL REVIEW C
Volume 90, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.90.054307
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Funding
- Tohoku University Focused Research Project Understanding the Origins of Matter in the Universe
- Major State 973 Program [2013CB834400]
- NSFC [11305134, 11175002, 11105111, 10947013]
- Fundamental Research Funds for the Central Universities [XDJK2010B007, XDJK2013C028]
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A study of the 4 alpha linear-chain structure in high-lying collective excitation states of O-16 with covariant density functional theory is presented. The low-spin states are obtained by configuration mixing of particle-number and angular-momentum projected quadrupole deformed mean-field states with the generator coordinate method. The high-spin states are determined by cranking calculations. These two calculations are based on the same energy density functional PC-PK1. We have found a rotational band at low spin with the dominant intrinsic configuration considered to be the one whereby 4 alpha clusters stay along a common axis. The strongly deformed rod shape also appears in the high-spin region with the angular momentum 13 (h) over bar to 18 (h) over bar; however, whether the state is a pure 4 alpha linear chain is less obvious than for the low-spin states.
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