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arXiv · 1403.7940

Searching for 4$α$ linear-chain structure in excited states of $^{16}$O with a covariant density functional theory

J. M. Yao·N. Itagaki·J. Meng
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Abstract

A study of 4$α$ linear-chain structure in high-lying collective excitation states of $^{16}$O with a 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 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 dominated intrinsic configuration considered to be the one that 4$α$ clusters stay along a common axis. The strongly deformed rod shape also appears in the high-spin region with the angular momentum $13-18\hbar$; however whether the state is pure $4α$ linear chain or not is less obvious than that in the low-spin states.

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J. M. Yao, N. Itagaki, J. Meng. 2014-09-19. Searching for 4$α$ linear-chain structure in excited states of $^{16}$O with a covariant density functional theory. https://doi.org/10.1103/physrevc.90.054307

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