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Chinese Physics C> 2007, Vol. 31> Issue(7) : 642-646 

Newly Discovered Candidate of the Member of Three-Phonon Multiplet in 76Se

  •  Key Laboratory of Nuclear Resources and Environment East China Institute of Technology, Ministry of Education, Nanchang 330013, China2 School of Nuclear Engineering and Technology, East China Institute of Technology, Fuzhou 344000, China3 School of Physics, Peking University, Beijing 100871, China

  • The decay scheme of 76Br is obtained by the 76Br (T1/2=16.2h)β+/EC approach. And the 1791.31keV level, which was identified firstly by Muller et al by the 76Se(p, p′) approach several years ago, is reconfirmed. However, Muller et al did not point out the spin and parity of this level, and which phonon multiplet it should be belong to. Now we consider the assertion that this level is assigned as a new candidate of the three-phonon multiplet in 76Se is reasonable. In addition, for researching deformation of 76Se which lies in the transitional region of strong deformed and spherical nuclei, we calculate the total Routhian surfaces (TRS) of positive-parity states by cranking shell model formalism.
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    [1] . Subber A R H, Robinson S J, Hungerford P et al. J. Phys.,1987, G13: 807-8372. SHEN Shui-Fa, LI Yan, HUANG Wen-Da et al. Journal ofthe Physical Society of Japan, 2004, 73: 1180-11903. M#252;ller H, Wohlfarth D, Hentschel E. Zfk-273, 19744. Nagahara T, Ruan J, Nakayama H et al. J. Phys. Soc. Jap.,1974, 37: 15. Lecomte R, Paradis P, Barrette J et al. Nucl. Phys., 1977,A284: 1236. Wells J C, Robinson R L, Jr, Kim H. J et al. Phys. Rev.,1980, C22: 11267. Andersson G, Larsson S E, Leander G et al. Nucl. Phys.,1976, A268: 2058. M#246;ller P, Nix J R, Myers W D et al. At. Data Nucl. DataTables, 1995, 59: 1859. LIAO Ji-Zhi. Modern Nuclear Model. Chengdu: SichuanUniversity Publisher, 1990. 79-91(in Chinese)(廖继志.近代原子核模型.成都:四川大学出版社，1990，79-91)10. LU Xi-Ting. Nuclear Physics. The Second Edition. Beijing:Atomic Energy Press, 2000. 165-175(in Chinese)(卢希庭.原子核物理.第2版.北京:原子能出版社，2000.165-175)

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CHEN Yong-Bo, SHEN Shui-Fa, XU Fu-Rong and ZHENG Shi-Jie. Newly Discovered Candidate of the Member of Three-Phonon Multiplet in 76Se[J]. Chinese Physics C, 2007, 31(7): 642-646.
CHEN Yong-Bo, SHEN Shui-Fa, XU Fu-Rong and ZHENG Shi-Jie. Newly Discovered Candidate of the Member of Three-Phonon Multiplet in 76Se[J]. Chinese Physics C, 2007, 31(7): 642-646. shu
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Received: 2006-10-19
Revised: 2007-01-09
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Newly Discovered Candidate of the Member of Three-Phonon Multiplet in 76Se

    Corresponding author: ZHENG Shi-Jie,
  • Key Laboratory of Nuclear Resources and Environment East China Institute of Technology, Ministry of Education, Nanchang 330013, China2 School of Nuclear Engineering and Technology, East China Institute of Technology, Fuzhou 344000, China3 School of Physics, Peking University, Beijing 100871, China
  • Received Date: 2006-10-19
  • Accepted Date: 2007-01-09
  • Available Online: 2007-07-05

Abstract: The decay scheme of 76Br is obtained by the 76Br (T1/2=16.2h)β+/EC approach. And the 1791.31keV level, which was identified firstly by Muller et al by the 76Se(p, p′) approach several years ago, is reconfirmed. However, Muller et al did not point out the spin and parity of this level, and which phonon multiplet it should be belong to. Now we consider the assertion that this level is assigned as a new candidate of the three-phonon multiplet in 76Se is reasonable. In addition, for researching deformation of 76Se which lies in the transitional region of strong deformed and spherical nuclei, we calculate the total Routhian surfaces (TRS) of positive-parity states by cranking shell model formalism.

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