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

Dipole bands in nucleus¹³⁹Pm

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Abstract：
High-spin states in nucleus¹³⁹Pm have been studied using the reaction¹¹⁶Cd(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 of¹³⁹Pm are compared with those of theN=78 isotone¹⁴¹Eu in which two dipole bands have been confirmed as magnetic rotational bands. The close similarity between them suggests that the dipole bands in¹³⁹Pm 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
Revised: 2009-07-10

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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 nucleus¹³⁹Pm

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 nucleus¹³⁹Pm have been studied using the reaction¹¹⁶Cd(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 of¹³⁹Pm are compared with those of theN=78 isotone¹⁴¹Eu in which two dipole bands have been confirmed as magnetic rotational bands. The close similarity between them suggests that the dipole bands in¹³⁹Pm may be magnetic rotational bands.

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Dipole bands in nucleus¹³⁹Pm

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