Isospin asymmetry effects in mirror nuclei with modern charge-dependent NN potential

摘要

The properties of T = 1/2 mirror nuclei in the lower fp shell have been investigated with a microscopic isospin-nonconserving effective Hamiltonian. The two-body interaction of the Hamiltonian is derived from a high-precision charge-dependent Bonn nucleon-nucleon potential using the G-matrix folded-diagram renormalization method. The level schemes and transition properties of the nuclei are calculated, obtaining reasonable agreements with existing experimental data and other theoretical calculations. The charge-dependent effective Hamiltonian provides a microscopic basis for the study of the isospin-symmetry-breaking effect in many-body nuclear systems. The effect is discussed with different methods and compared with experimental observations by calculating the mirror energy difference (MED) which is a sensitive probe to measure the effect. (C) 2008 Elsevier B.V. All rights reserved.