Tensor force effect on proton shell structure in neutron-rich Ca isotopes

• DOI: 10.1007/s11433-013-5143-0
• Publication Date: 2013-07-24T03:19:02Z
• Authors: ZhenYu Li; YanZhao Wang; GuoLiang Yu; JianZhong Gu
• Keywords: Isotopes of calcium; Nuclear force

In the framework of the Skyrme-Hartree-Fock approach with 36 sets of the TIJ parameterizations, the tensor force effect on the evolution of the single-proton states in the calcium isotopes is systematically investigated. It is shown that the single-proton states with higher angular momenta are influenced significantly by the tensor force and the trend in the evolution of somesingle-particle energy differences with the mass number of the isotopes depends sensitively on a parameter β T associated with the intensity of the tensor force. To understand this phenomenon, we analyze the spin-orbit potentials and the radial wave functions of relevant single-proton orbits in detail. In addition, it is found that some TIJ interactions could cause the 2s1/2-1d3/2 energy level inversion in 48Ca.