Abstract
The previous mean-field calculation [Phys. Rev. C 78, 054311 (2008)] has shown that the oblate deformation in disappears when a particle is added to these nuclei. Here, we investigate this phenomenon by taking into account the effects beyond the mean-field approximation. To this end, we employ the microscopic particle-rotor model based on the covariant density functional theory. We show that the deformation of does not completely disappear, even though it is somewhat reduced, after a particle is added if the beyond-mean-field effect is taken into account. We also discuss the impurity effect of a particle on the electric-quadrupole transition and show that an addition of a particle leads to a reduction in the value, as a consequence of the reduction in the deformation parameter.
- Received 18 April 2018
- Revised 25 May 2018
DOI:https://doi.org/10.1103/PhysRevC.97.064318
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