High-spin states of125Sb: Particle-core excitation coupling
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Excited states of125Sb have been studied using in-beam γ spectroscopy techniques via the124Sn(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 of125Sb 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(h 11/2 s 1/2)5−, πg7/2⊗v(h 11/2 d 3/2)7− and πg7/2⊗v(h 11 2/2 )10 + configurations, respectively.
Keywordsin-beam γ spectroscopy isomer particle-core coupling
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