Impact of pairing correlations on the orientation of the nuclear spin
Physical Review C - Nuclear Physics
Physics Division, Argonne National Laboratory, Argonne, IL, United States; State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing, China; School of Physics and Nuclear Energy Engineering, Beihang University, Beijing, China; Department of Physics, University of Stellenbosch, Stellenbosch, South Africa
For the first time, the tilted axis cranking covariant density functional theory with pairing correlations has been formulated and implemented in a fully self-consistent and microscopic way to investigate the evolution of the spin axis and the pairing effects in rotating triaxial nuclei. The measured energy spectrum and transition probabilities for the Nd135 yrast band are reproduced well without any ad hoc renormalization factors when pairing effects are taken into account. A transition from collective to chiral rotation has been demonstrated. It is found that pairing correlations introduce additional admixtures in the single-particle orbitals, and, thus, influence the structure of tilted axis rotating nuclei by reducing the magnitude of the proton and neutron angular momenta while merging their direction. © 2015 American Physical Society.
DOE, National Natural Science Foundation of China; 11105005, NSFC, National Natural Science Foundation of China; 11175002, NSFC, National Natural Science Foundation of China; 11335002, NSFC, National Natural Science Foundation of China; 11375015, NSFC, Na