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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

  • 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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    [1] . Jerzy Ludziejewski,Hans Arnold.Z.Phys. , 1977, A281: 2872. Funke L,Fromm W D,Keller H J et al. Nucl. Phys. , 1976, A274: 613. Piiparinen M, Atac A, Blomqvist J et al. Nucl. Phys. , 1996, A605: 1914. Kownacki J, Ludziejewski J, Sujkowski Z et al. Nucl. Phys. , 1974, A236:1255. Hussein S G, Sanderson N E, Summers-Gill R G. Nucl. Phys. , 1974,A219: 4076. Schedl K H, Bercks C,Hummel E. Z. Phys. , 1975, A272: 4177. Wildenthal BH. Phys. Rev. Lett . , 1969, 22: 11188. Jolly R K,Kashy E. Phys. Rev. , 1971, C4: 8879. Jolly R K,Kashy E. Phys. Rev. , 1971, C4: 139810. de Angleis G, Lunardi S, Bazzacco D et al. Z. Phys. , 1993, A347: 93

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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.
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. shu
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Received: 2003-11-19
Revised: 1900-01-01
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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.

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