Dipole bands in nucleus <SUP>139</SUP>Pm

ZHANG Ning-Tao; ZHANG Yu-Hu; ZHOU Xiao-Hong; LIU Min-Liang; ZHENG Yong; GUO Ying-Xiang; CHEN Liang; WANG Shi-Tao; ZHANG Xin; ZHU Li-Hua; WU Xiao-Guang

doi:10.1088/1674-1137/34/4/007

Chinese Physics C> 2010, Vol. 34> Issue(4) : 456-459 DOI: 10.1088/1674-1137/34/4/007

Dipole bands in nucleus ¹³⁹Pm

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Abstract：
High-spin states in nucleus ¹³⁹Pm have been studied using the reaction ¹¹⁶Cd(²⁷Al, 4n) ¹³⁹Pm. Two dipole cascades have been found. Spin and parity assignments were based on the Directional Correlation of Oriented Nuclei (DCO) ratios and systematic behavior in neighboring odd-proton nuclei. The level structures of ¹³⁹Pm are compared with those of the N=78 isotone ¹⁴¹Eu in which two dipole bands have been confirmed as magnetic rotational bands. The close similarity between them suggests that the dipole bands in ¹³⁹Pm may be magnetic rotational bands.

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ZHANG Ning-Tao, ZHANG Yu-Hu, ZHOU Xiao-Hong, LIU Min-Liang, ZHENG Yong, GUO Ying-Xiang, CHEN Liang, WANG Shi-Tao, ZHANG Xin, ZHU Li-Hua and WU Xiao-Guang. Dipole bands in nucleus ¹³⁹Pm[J]. Chinese Physics C, 2010, 34(4): 456-459. doi: 10.1088/1674-1137/34/4/007

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Received: 2009-06-01
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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

Dipole bands in nucleus ¹³⁹Pm

Corresponding author: ZHANG Ning-Tao,

Received Date: 2009-06-01

Accepted Date: 2009-07-10

Available Online: 2010-04-05

Abstract: High-spin states in nucleus ¹³⁹Pm have been studied using the reaction ¹¹⁶Cd(²⁷Al, 4n) ¹³⁹Pm. Two dipole cascades have been found. Spin and parity assignments were based on the Directional Correlation of Oriented Nuclei (DCO) ratios and systematic behavior in neighboring odd-proton nuclei. The level structures of ¹³⁹Pm are compared with those of the N=78 isotone ¹⁴¹Eu in which two dipole bands have been confirmed as magnetic rotational bands. The close similarity between them suggests that the dipole bands in ¹³⁹Pm may be magnetic rotational bands.

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Dipole bands in nucleus 139Pm

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Dipole bands in nucleus 139Pm

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Dipole bands in nucleus ¹³⁹Pm

Dipole bands in nucleus ¹³⁹Pm