High-Spin Level Scheme of Odd-Odd <SUP>140</SUP>Pr Nucleus

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

Chinese Physics C> 2004, Vol. 28> Issue(8) : 806-809

High-Spin Level Scheme of Odd-Odd ¹⁴⁰Pr Nucleus

Institute of Modern Physics,Chinese Academy of Science,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 level structure of doubly odd nucleus ¹⁴⁰Pr has been investigated using in beam γ spectroscopy techniques by means of the ¹³⁰Te(¹⁴N,4n)¹⁴⁰Pr reaction at beam energy of 58MeV.γ-ray excitation functions,γ-ray singles and γ-γ-t coincidences were measured experimentally.The level scheme of ¹⁴⁰Pr,including 27 new levels and 42 new γ-rays,was established for the first time up to 4717.3keV in excitation energy.Based on the measured γ-ray anisotropies,spin values were suggested to the levels in ¹⁴⁰Pr.Several quasiparticle configurations are discussed on the basis of systematics in the neighboring odd odd nuclei,and interpreted qualitatively.

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YU Hai-Ping, GUO Ying-Xiang, LEI Xiang-Guo, ZHANG Yu-Hu, ZHOU Xiao-Hong, LUO Peng, LIU Min-Liang, SONG Li-Tao, WANG Hua-Lei, XIE Cheng-Ying, ZHENG Yong, GUO Wen-Tao, High-Spin Level Scheme of Odd-Odd ¹⁴⁰Pr Nucleus[J]. Chinese Physics C, 2004, 28(8): 806-809.

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Received: 2003-11-19
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

High-Spin Level Scheme of Odd-Odd ¹⁴⁰Pr Nucleus

Corresponding author: GUO Ying-Xiang,

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

Received Date: 2003-11-19
Accepted Date: 1900-01-01
Available Online: 2004-08-05

Abstract: High spin level structure of doubly odd nucleus ¹⁴⁰Pr has been investigated using in beam γ spectroscopy techniques by means of the ¹³⁰Te(¹⁴N,4n)¹⁴⁰Pr reaction at beam energy of 58MeV.γ-ray excitation functions,γ-ray singles and γ-γ-t coincidences were measured experimentally.The level scheme of ¹⁴⁰Pr,including 27 new levels and 42 new γ-rays,was established for the first time up to 4717.3keV in excitation energy.Based on the measured γ-ray anisotropies,spin values were suggested to the levels in ¹⁴⁰Pr.Several quasiparticle configurations are discussed on the basis of systematics in the neighboring odd odd nuclei,and interpreted qualitatively.