Fission Barriers from a Multidimensionally Constrained Relativistic Mean Field Model
This work was partly supported by the NSF of China (11525524, 11621131001 and 11647601) and the 973 Program of China (2013CB834400). The computation of this work was supported by the HPC Cluster of SKLTP/ITP-CAS and the Supercomputing Center, CNIC of CAS.
Many shape degrees of freedom play crucial roles in determining fission barriers. In multidimensionally constrained covariant density functional theories (MDC-CDFTs) which we have developed in recent years, both the axial and the spatial reflection symmetries are broken and all deformations described by βλμ with even μ, including β20, β22, β30, β32, β40, etc., are considered self-consistently. The MDC-CDFTs have been applied to the study of fission barriers and potential energy surfaces of actinide nuclei, third minima in potential energy surfaces of light actinides, shapes and potential energy surfaces of superheavy nuclei, the Y32 correlations in N = 150 isotones and Zr isotopes, and the shape of hypernuclei. In this contribution we will present an introduction of the MDC-CDFTs and a short review of its applications on fission barriers.
