NUCLEAR PHYSICS |
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High-Spin Level Scheme of 120I |
LI Li1, SUN Ji1, LI Jian1, YU De-Yang1, LIU Gong-Ye1, ZHANG Wei-Tian, MA Ke-Yan1, YANG Dong1, MA Ying-Jun1**, WU Xiao-Guang2, ZHU Li-Hua3, HE Chuang-Ye2, ZHENG Yun2, YAO Shun-He2, LI Cong-Bo2, HU Shi-Peng2, CAO Xue-Peng2, WANG Jin-Long2, YU Bei-Bei2 |
1College of Physics, Jilin University, Changchun 130012 2China Institute of Atomic Energy, Beijing 102413 3School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191
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Cite this article: |
LI Li, SUN Ji, LI Jian et al 2013 Chin. Phys. Lett. 30 062301 |
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Abstract Excited states in 120I are investigated utilizing in-beam gamma-ray spectroscopy following the 114Cd(11B,5n) reaction at 70 MeV bombarding energy. A level scheme is constructed with states up to 9 MeV. The levels are classified into several bands and their possible configurations at low spins are discussed briefly. Based on the linking transitions between different bands at higher spins, the excitation energy of the previously reported T1/2=53 min isomer is ascertained to be 72 keV. Evidence showing the existence of an isomer at an excitation energy of 6.4 MeV is presented.
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Received: 06 February 2013
Published: 31 May 2013
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PACS: |
23.20.Lv
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(γ-transitions and level energies)
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21.10.-k
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(Properties of nuclei; nuclear energy levels)
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27.60.+j
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(90 ≤ A ≤ 149)
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