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β-decay studies approaching the N=20 island of inversion with a new shell-model Hamiltonian

β-decay studies approaching the N=20 island of inversion with a new shell-model Hamiltonian
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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.
出处 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2017年第8期15-20,共6页 中国科学:物理学、力学、天文学(英文版)
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)
关键词 island of inversion β decay shell model Gogny interaction 哈密顿量 壳模型 β衰变 反转 逼近 平均场理论 衰变性质 相互作用
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