Chinese Physics C > 2009, Vol. 33 > Issue(S1): 185-187 DOI: 10.1088/1674-1137/33/S1/059

High spin band structure in¹³⁹Nd

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Abstract：
High-spin states in¹³⁹Nd nucleus have been reinvestigated with the reaction¹²⁸Te (¹⁶O, 5n) at a beam energy of 90 MeV. The level scheme has been expanded with spin up to 47/2 h. At the low spin states, the yrast collective structure built on the νh_{11 / 2}^－1multiplet shows a transitional shape with γ≈32° according to calculations of the triaxial rotor-plus-particle model. Three collective oblate bands with γ~－60° at the high spin states were identified for the first time. A band crossing is observed around hω~0.4 MeV in one oblate band based on the 25/2^－level.

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XU Qiang, ZHU Sheng-Jiang, CHE Xing-Lai, DING Huai-Bo, GU Long, ZHU Li-Hua, WU Xiao-Guang, LIU Ying, HE Chuang-Ye, LI Li-Hua, PAN Bo, HAO Xin and LI Guang-Sheng. High spin band structure in ¹³⁹Nd[J]. Chinese Physics C, 2009, 33(S1): 185-187. doi: 10.1088/1674-1137/33/S1/059

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Received: 2008-10-23
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

High spin band structure in¹³⁹Nd

Corresponding author:XU Qiang,

Received Date:2008-10-23

Accepted Date:1900-01-01

Available Online:2009-01-10

Abstract:High-spin states in¹³⁹Nd nucleus have been reinvestigated with the reaction¹²⁸Te (¹⁶O, 5n) at a beam energy of 90 MeV. The level scheme has been expanded with spin up to 47/2 h. At the low spin states, the yrast collective structure built on the νh_{11 / 2}^－1multiplet shows a transitional shape with γ≈32° according to calculations of the triaxial rotor-plus-particle model. Three collective oblate bands with γ~－60° at the high spin states were identified for the first time. A band crossing is observed around hω~0.4 MeV in one oblate band based on the 25/2^－level.

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High spin band structure in¹³⁹Nd

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