High Spin States in the N=50 Nucleus <SUP>88</SUP>Sr

LIU Zhong

Chinese Physics C> 2001, Vol. 25> Issue(10) : 977-983

High Spin States in the N=50 Nucleus ⁸⁸Sr

LIU Zhong ^,

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China2 Japan Atomic Energy Research Institute JAERI, Tokai, Ibaraki 319- 1195, Japan3 The Institute of Physical and Chemical Research RIKEN, Wako, Saitama 351-0198, Japan

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Abstract：
Excited states of ⁸⁸Sr have been produced in the fusion evaporation reaction between ⁸²Se beam and ¹⁶O from a heavily oxidized Ba target and studied using the in-beam γspectroscopy tech- niques. Two high-spin level structures have been Observed and established up to 8.5MeV and 7.9MeV excitation energy with spin values of 13h and 12h, respectively. Based on the measure- ments of the DCO ratios and anisotropies of γ-rays, spin values of the excited states have been as- signed up to the highest levels observed. Possible coofgurations are discussed for the two high spin level structures.

References

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Ghugre S et al. Phys. Rev., 1995, C52:18812 Warburton K et al. Phys. Rev., 1985, C31: 1184 3 WiM G et al. Phys. Rev., 1993, C48:10104 Muller H W, Tepel J W. Nucl. Data Sheets, 1988, 54: 1 5 Arnell S et al. Nuc. Phys.. 1975, A241: 1096 LI P C et al. Nucl. Phys., 1987, A462:26 7 Stefanova E A et al. Nucl. Pkys. , 2000, A669: 14 8 Furuno K et al. Nucl. Instr. and Metk., 1999, A421:2119 Krane K S et al. Nucl. Data Tables, 1973, A11:35110 Kouw L R et al. Nucl. Phys., 1988, A481:13

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LIU Zhong. High Spin States in the N=50 Nucleus ⁸⁸Sr[J]. Chinese Physics C, 2001, 25(10): 977-983.

LIU Zhong. High Spin States in the N=50 Nucleus ⁸⁸Sr[J]. Chinese Physics C, 2001, 25(10): 977-983. shu

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Received: 2000-10-08
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 States in the N=50 Nucleus ⁸⁸Sr

LIU Zhong ^,

Corresponding author: LIU Zhong,

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China2 Japan Atomic Energy Research Institute JAERI, Tokai, Ibaraki 319- 1195, Japan3 The Institute of Physical and Chemical Research RIKEN, Wako, Saitama 351-0198, Japan

Received Date: 2000-10-08
Accepted Date: 1900-01-01
Available Online: 2001-10-05

Abstract: Excited states of ⁸⁸Sr have been produced in the fusion evaporation reaction between ⁸²Se beam and ¹⁶O from a heavily oxidized Ba target and studied using the in-beam γspectroscopy tech- niques. Two high-spin level structures have been Observed and established up to 8.5MeV and 7.9MeV excitation energy with spin values of 13h and 12h, respectively. Based on the measure- ments of the DCO ratios and anisotropies of γ-rays, spin values of the excited states have been as- signed up to the highest levels observed. Possible coofgurations are discussed for the two high spin level structures.