High-K Isomers in Light Superheavy Nuclei by PNC-CSM method

College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

^* e-mail: hext@nuaa.edu.cn

Published online: 16 May 2018

Abstract

The high-K isomeric states in light superheavy nuclei around A = 250 mass region are investigated by the Cranked Shell Model (CSM) with pairing treated by a Particle-Number Conserving (PNC) method. With including the higher-order deformation ε₆, both of the high–K multi-particle state energies and the rotational bands in ²⁵⁴No and N = 150 isotone are reproduced well. The isomeric state energies and the microscopic mechanism of kinematic moment of inertia variations versus rotational frequency are discussed. The irregularity of the two-neutron K^π = 8^- state band at ħω ≈ 0:17 in ²⁵²No is caused by the configuration mixing with the two-proton K^π = 8^- band. .