High spin band structure in <SUP>139</SUP>Nd

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; LI Guang-Sheng

doi:10.1088/1674-1137/33/S1/059

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

High spin band structure in ¹³⁹Nd

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High-spin states in ¹³⁹Nd nucleus have been reinvestigated with the reaction ¹²⁸Te (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}^－1 multiplet 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 in ¹³⁹Nd

Corresponding author: XU Qiang,

Received Date: 2008-10-23

Accepted Date: 1900-01-01

Available Online: 2009-01-10

Abstract: High-spin states in ¹³⁹Nd nucleus have been reinvestigated with the reaction ¹²⁸Te (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}^－1 multiplet 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 in ¹³⁹Nd

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High spin band structure in 139Nd

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High spin band structure in 139Nd

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High spin band structure in ¹³⁹Nd

High spin band structure in ¹³⁹Nd