A study of the 4α linear-chain structure in high-lying collective excitation states of O16 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 4α clusters stay along a common axis. The strongly deformed rod shape also appears in the high-spin region with the angular momentum 13 to 18 ; however, whether the state is a pure 4α linear chain is less obvious than for the low-spin states.
ASJC Scopus subject areas
- Nuclear and High Energy Physics