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High Spin States in Odd--Odd 160Tm Nucleus |
| SUN Liang1;LU Jing-Bin1;YANG Dong1;WANG Lie-Lin1;YANG Sen1;LIU Yun-Zuo1;ZHAO Yan-Xin1;ZHOU Wen-Ping1;MA Ying-Jun1;ZHU Li-Hua2;WU Xiao-Guang2;LI Guang-Sheng2 |
| 1Physics College, Jilin University, Jilin Changchun 1300232China Institute of Atomic Energy (CIAE), Beijing 102413 |
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SUN Liang, LU Jing-Bin, YANG Dong et al 2008 Chin. Phys. Lett. 25 1996-1999 |
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Abstract High-spin states of 160Tm are studied by the 146Nd19F, 5n) reaction at a beam energy of 102MeV. The previously known π h11/2⊕υi13/2 yrast band and π h11/2⊕υh9/2 side band are confirmed. The level scheme is enriched and more low-lying levels are observed. A new side band is observed and assigned as the favoured signature partner of π d3/2⊕υi13/2. The spin of this band is assigned with the energy level systematics. It is pointed out that
the $B(M1)/B(E2)$ ratios increase rapidly at the high frequency approaching the second crossing in the π11/2⊕υi13/2 band, which is closely related to the alignment gain of the aligned i13/2 quasineutron.
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| Keywords:
21.10.Re
23.20.Lv
27.70.+q
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Received: 25 December 2007
Published: 31 May 2008
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