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

Abstract

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 ε 6 , both of the high−K multi-particle state energies and the rotational bands in 254 No 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 ω ≈ 0.17 in 252 No is caused by the configuration mixing with the two-proton K π = 8 − band. .