Experimental Study of High-Spin States in Odd-Odd <SUP>170</SUP>Re

WANG Hua-Lei; ZHANG Yu-Hu; ZHOU Xiao-Hong; GUO Ying-Xiang; LEI Xiang-Guo; LIU Min-Liang; LUO Peng; XIE Cheng-Ying; SONG Li-Tao; YU Hai-Ping; ZHENG Yong; GUO Wen-Tao

Chinese Physics C> 2004, Vol. 28> Issue(7) : 699-705

Experimental Study of High-Spin States in Odd-Odd ¹⁷⁰Re

Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China2 Graduate School of the Chinese Academy of Sciences,Beijing 100039,China3 China Institute of Atomic Energy, Beijing 102413, China

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Abstract：
High-spin states in doubly odd ¹⁷⁰Re have been populated and investigated using ¹⁴²Nd (³²S,1p3nγ)¹⁷⁰reaction at 166MeV bombarding energy. X-γ and γ-γ-t coincidence measurements have been carried out in the experiment. Based on the coincidence relationships, a rotational band in ¹⁷⁰has been identified for the first time, extending the high-spin studies of A≈160 odd-odd nuclei to the currently lightest rhenium isotope. The band has been assigned to be built on the πh_11/2⊙υi_13/2 configuration according to their rotational properties in quasiparticle alignment, signature splitting, level spacing systematics, as well as the existing knowledge in neighboring nuclei. Low-spin signature inversion has been suggested for the πh_11/2⊙υi_13/2 band in ¹⁷⁰.

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WANG Hua-Lei, ZHANG Yu-Hu, ZHOU Xiao-Hong, GUO Ying-Xiang, LEI Xiang-Guo, LIU Min-Liang, LUO Peng, XIE Cheng-Ying, SONG Li-Tao, YU Hai-Ping, ZHENG Yong, GUO Wen-Tao, Experimental Study of High-Spin States in Odd-Odd ¹⁷⁰Re[J]. Chinese Physics C, 2004, 28(7): 699-705.

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Received: 2003-11-28
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Experimental Study of High-Spin States in Odd-Odd ¹⁷⁰Re

Corresponding author: ZHANG Yu-Hu,

Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China2 Graduate School of the Chinese Academy of Sciences,Beijing 100039,China3 China Institute of Atomic Energy, Beijing 102413, China

Received Date: 2003-11-28
Accepted Date: 1900-01-01
Available Online: 2004-07-05

Abstract: High-spin states in doubly odd ¹⁷⁰Re have been populated and investigated using ¹⁴²Nd (³²S,1p3nγ)¹⁷⁰reaction at 166MeV bombarding energy. X-γ and γ-γ-t coincidence measurements have been carried out in the experiment. Based on the coincidence relationships, a rotational band in ¹⁷⁰has been identified for the first time, extending the high-spin studies of A≈160 odd-odd nuclei to the currently lightest rhenium isotope. The band has been assigned to be built on the πh_11/2⊙υi_13/2 configuration according to their rotational properties in quasiparticle alignment, signature splitting, level spacing systematics, as well as the existing knowledge in neighboring nuclei. Low-spin signature inversion has been suggested for the πh_11/2⊙υi_13/2 band in ¹⁷⁰.