Chin. Phys. Lett.  2001, Vol. 18 Issue (10): 1323-1326    DOI:
Original Articles |
Search for Signature Inversion in πi13/2 vi13/2 Band in Odd-Odd 178Ir
ZHANG Yu-Hu1;T. Hayakawa2;M. Oshima2;Y. Toh2;J. Katakura2;Y. Hatsukawa2;M. Matsuda2;N. Shinohara2;T. Ishii2;H. Kusakari3;M. Sugawara4;T. Komatsubara5;K. Furuno5
1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 2Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan 3Chiba University, Inage-ku, Chiba 263-8512, Japan Chiba Institute of Technology, Narashino, Chiba 275-0023, Japan 4Institute of Physics and Tandem Accelerator Center, University of Tsukuba, Ibaraki 305-0006, Japan
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ZHANG Yu-Hu, T. Hayakawa, M. Oshima et al  2001 Chin. Phys. Lett. 18 1323-1326
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Abstract Search for the πi13/2 vi13/2 band in 178Ir have been conducted through the 152Sm(31P,5nγ)178Ir reaction and the excitation functions, x-γ and γ-γ-t coincidence measurements. Five rotational bands have been newly identified. The low-spin signature inversion in the πi13/2 vi13/2 band has been confirmed by the observations of linking transitions and signature crossing at I = 25.5ħ. The inversion phenomenon in πh11/2 vi13/2, πh9/2 vi13/2, and πh13/2 vi13/2 structures in 178Ir provides a unique testing ground for different theoretical interpretations.
Keywords: 21.10.Re      23.20.Lv      27.70.+q     
Published: 01 October 2001
PACS:  21.10.Re (Collective levels)  
  23.20.Lv (γ-transitions and level energies)  
  27.70.+q (150 ≤ A ≤ 189)  
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ZHANG Yu-Hu
T. Hayakawa
M. Oshima
Y. Toh
J. Katakura
Y. Hatsukawa
M. Matsuda
N. Shinohara
T. Ishii
H. Kusakari
M. Sugawara
T. Komatsubara
K. Furuno
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