Chinese Physics C > 2002, Vol. 26 > Issue(8): 809-813

Electromagnetic Transition Rates and Deformation Feature in¹³⁰Ce

China Institute of Atomic Energy,Beijing 102413,China2 Department of Physics,Tsinghun University,Beijing 100084,China

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Abstract：
Lifetimes of the excited states in light rare-earth nucleus ¹³⁰Ce have been measured using heavy ion reaction ¹¹⁶Sn( ¹⁶O,2n) ¹³⁰Ce at beam energy of 73MeV through analyzing the Doppler-broadened line shapes. The reduced transition probabilities B(E2) are extracted from these measurements. The experimental results show that the previously reported anomalously high B(E2) value has not been observed in the present work. The transition quadrupole moment for the yrast band varies with spin and corresponds to a triaxial deformation with γ≈7°.

References

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LI Guang-Sheng, YANG Li-Ming, DAI Zheng-Yu, LIU Xiang-An, ZHANG Lan-Kuan, WEN Shu-Xian, WU Xiao-Guang, YUAN Guan-Jun, WENG Pei-Kun, LI Sheng-Gang, ZHU Sheng-Jiang, YANG Chun-Xiang and Electromagnetic Transition Rates and Deformation Feature in ¹³⁰Ce[J]. Chinese Physics C, 2002, 26(8): 809-813.

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Received: 2001-08-15
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

Electromagnetic Transition Rates and Deformation Feature in¹³⁰Ce

Corresponding author:LI Guang-Sheng,

China Institute of Atomic Energy,Beijing 102413,China2 Department of Physics,Tsinghun University,Beijing 100084,China

Received Date:2001-08-15
Accepted Date:1900-01-01
Available Online:2002-08-05

Abstract:Lifetimes of the excited states in light rare-earth nucleus¹³⁰Ce have been measured using heavy ion reaction¹¹⁶Sn(¹⁶O,2n)¹³⁰Ce at beam energy of 73MeV through analyzing the Doppler-broadened line shapes. The reduced transition probabilities B(E2) are extracted from these measurements. The experimental results show that the previously reported anomalously high B(E2) value has not been observed in the present work. The transition quadrupole moment for the yrast band varies with spin and corresponds to a triaxial deformation with γ≈7°.