Collective Band Structures in Neutron-Rich Odd-A <SUP>145,147</SUP>Ce Nuclei

ZHU ShengJiang; GAN CuiYun; ZHU LingYan; YANG LiMing; XU RuiQing; JON MyonGil; JIANG Zhuo; ZHANG Zheng

Chinese Physics C> 2000, Vol. 24> Issue(11) : 1018-1023

Collective Band Structures in Neutron-Rich Odd-A ^145,147Ce Nuclei

Department of Physics, Tsinghua University, Beijing 100084, China1 Department of Physics, Vanderbilt University, Nashville, TN 37235, USA2 Department of physics, Mississippi State University, MS 39762, USA3 Idaho National Engineering Laboratory, Idaho Falls, In 83415, USA4 Lawrence Berkeley Laboratory, Berkeley, CA 94720, USA5 Joint Institute for Nuclear Research, Dubna 141980, Russia

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Through study of the prompt r-rays emitted in the spontaneous fission of ²⁵²Cf, high spin states of neutron-rich odd-A ^145,147Ce nuclei have been investigated. The levels in ¹⁴⁷Ce have been extended. A collective band in ¹⁴⁵Ce have been identified for the first time. The results from the particle rotor model calculations indicate that the yrast bands in ¹⁴⁵Ce and ¹⁴⁷Ce originate from vi_13/2 orbital coupling and the ground states of ¹⁴⁵Ce and ¹⁴⁷Ce originate from (vh_9/2,vf_7/2) and vh_9/2 configiration, respectively. No obvious octupole deformation was observed in these two isotopes, but a side band obtained in ¹⁴⁷Ce may show some octupole correlations.

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ZHU ShengJiang, GAN CuiYun, ZHU LingYan, YANG LiMing, XU RuiQing, JON MyonGil, JIANG Zhuo, ZHANG Zheng and Collective Band Structures in Neutron-Rich Odd-A ^145,147Ce Nuclei[J]. Chinese Physics C, 2000, 24(11): 1018-1023.

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Received: 1999-10-27
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Collective Band Structures in Neutron-Rich Odd-A ^145,147Ce Nuclei

Corresponding author: ZHU ShengJiang,

Department of Physics, Tsinghua University, Beijing 100084, China1 Department of Physics, Vanderbilt University, Nashville, TN 37235, USA2 Department of physics, Mississippi State University, MS 39762, USA3 Idaho National Engineering Laboratory, Idaho Falls, In 83415, USA4 Lawrence Berkeley Laboratory, Berkeley, CA 94720, USA5 Joint Institute for Nuclear Research, Dubna 141980, Russia

Received Date: 1999-10-27

Accepted Date: 1900-01-01

Available Online: 2000-11-05

Abstract: Through study of the prompt r-rays emitted in the spontaneous fission of ²⁵²Cf, high spin states of neutron-rich odd-A ^145,147Ce nuclei have been investigated. The levels in ¹⁴⁷Ce have been extended. A collective band in ¹⁴⁵Ce have been identified for the first time. The results from the particle rotor model calculations indicate that the yrast bands in ¹⁴⁵Ce and ¹⁴⁷Ce originate from vi_13/2 orbital coupling and the ground states of ¹⁴⁵Ce and ¹⁴⁷Ce originate from (vh_9/2,vf_7/2) and vh_9/2 configiration, respectively. No obvious octupole deformation was observed in these two isotopes, but a side band obtained in ¹⁴⁷Ce may show some octupole correlations.

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Collective Band Structures in Neutron-Rich Odd-A 145,147Ce Nuclei

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Collective Band Structures in Neutron-Rich Odd-A ^145,147Ce Nuclei