Excited states of 125Sb have been studied using in-beam γspectroscopy techniques via the 124Sn(7Li, α2n) reaction at a beam energy of 32 MeV. A high-spin level scheme including 21 new γ-transitions and 14 new excit...Excited states of 125Sb have been studied using in-beam γspectroscopy techniques via the 124Sn(7Li, α2n) reaction at a beam energy of 32 MeV. A high-spin level scheme including 21 new γ-transitions and 14 new excited states have been established. Three isomers have been identified at 1970, 2110 and 2471 keV and the ranges of their half-lives have been estimated from the delayed coincidence data. The level structure of 125Sb is discussed in terms of particle-core excitation coupling. With the help of empirical shell model calculations the three isomers are proposed to have three-quasiparticle πg7/2(*)V(h11/2s1/2)5-,πg7/2(*)V(h11/2d3/2)7-and πg7/2(*)V(h211/2)10+configurations, respectively.展开更多
基金the National Natural Science Foundation of China(Grant Nos.19705011,10025525)Major State Research Development Program(Grant No.G2000077400)the Chinese Academy of Sciences and JSPS Invitation Fellowship(Grant No.L00515)
文摘Excited states of 125Sb have been studied using in-beam γspectroscopy techniques via the 124Sn(7Li, α2n) reaction at a beam energy of 32 MeV. A high-spin level scheme including 21 new γ-transitions and 14 new excited states have been established. Three isomers have been identified at 1970, 2110 and 2471 keV and the ranges of their half-lives have been estimated from the delayed coincidence data. The level structure of 125Sb is discussed in terms of particle-core excitation coupling. With the help of empirical shell model calculations the three isomers are proposed to have three-quasiparticle πg7/2(*)V(h11/2s1/2)5-,πg7/2(*)V(h11/2d3/2)7-and πg7/2(*)V(h211/2)10+configurations, respectively.
