摘要
β-decay properties of N=18-22,Z=10-14 nuclei are analyzed with a new shell-model Hamiltonian using the Gogny densitydependent interaction.The Gogny force which has been widely and successfully used in mean-field theory can provide reasonable two-body matrix elements for cross-shell calculations.The log f t values andβ-decay level schemes are systematically studied using the D1S-Gogny interaction and compared with the SDPF-M results and experimental data.It is shown that the new Hamiltonian provides reliable results forβ-decay along with subtle level schemes for this region.Shell-model calculations with Gogny interaction can lead to a successful description of nuclei in and around the N=20 island of inversion and supplements experiment where sufficient data are not available.
β-decay properties of N=18-22, Z=10-14 nuclei are analyzed with a new shell-model Hamiltonian using the Gogny density- dependent interaction. The Gogny force which has been widely and successfully used in mean-field theory can provide rea- sonable two-body matrix elements for cross-shell calculations. The logft values and β-decay level schemes are systematically studied using the D1S-Gogny interaction and compared with the SDPF-M results and experimental data. It is shown that the new Hamiltonian provides reliable results for β-decay along with subtle level schemes for this region. Shell-model calculations with Gogny interaction can lead to a successful description of nuclei in and around the N=20 island of inversion and supplements experiment where sufficient data are not available.
基金
supported by the National Key Basic Research Program of China(Grant No.2013CB834402)
the National Natural Science Foundation of China(Grant Nos.11235001,11320101004,and 11575007)
the China-U.S.Theory Institute for Physics with Exotic Nuclei(CUSTIPEN)funded by the U.S.Department of Energy,Office of Science(Grant No.DESC0009971)
