Identification of a New Band and Its Signature Inversion in 174Re
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ZHANG Yu-Hu,
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GUO Song,
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ZHOU Xiao-Hong,
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MA Long,
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GUO Wen-Tao,
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Oshima M.,
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Toh Y.,
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Koizumi M.,
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Osa A.,
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Kimura A.,
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Hatsukawa Y.,
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Sugawara M.,
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Kusakari H.
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Abstract
High spin states in 174Re are investigated via the 152Sm(27Al,5nγ)174Re reaction and γ-γ coincidence relationships are analysed carefully. A new band is identified due to its spectroscopic connection with the known π1/2-541⊕ν1/2-521 band. This band is proposed to be the ground-state band built on the π 1/2- 541⊕ν5/2- 512 configuration in view of the low-lying intrinsic states in the neighbouring odd-mass nuclei. It is of particular interesting
that the new band exhibits a phenomenon of low-spin signature inversion,
providing a new situation for theoretical investigations.
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