| NUCLEAR PHYSICS |
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Properties of the β-Delayed Proton Decay of 147Er |
MA Fei1,2, ZHOU Xiao-Hong1, ZHENG Yong1, XU Shu-Wei1, XIE Yuan-Xiang1, CHEN Liang1, ZHANG Yu-Hu1, LI Zhan-Kui1, QIANG Yun-Hua1, LEI Xiang-Guo1, GUO Ying-Xiang1, GUO Song1, DING Bing1, WANG Hai-Xia1, LI Guang-Shun1, ZHOU Hou-Bing1,2 |
| 1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 2Graduate University of Chinese Academy of Sciences, Beijing 100049 |
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| Cite this article: |
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MA Fei, ZHOU Xiao-Hong, ZHENG Yong et al 2010 Chin. Phys. Lett. 27 062104 |
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Abstract The β-delayed proton decay of 147Er is studied experimentally using the 58Ni+92Mo reaction at a beam energy of 383 MeV. Based on a He-jet apparatus coupled with a tape transport system, theβ-delayed proton radioactivities both from the νs1/2 ground state and the νh11/2 isomer in 147Er are identified by proton-γ coincidence measurements. By analyzing the time distribution of the 4+→ 2+γ transition in the grand-daughter nucleus 146Dy, a half-life of 1.6±0.2 s is determined for the νh11/2 isomer in 147Er. The half-life for the ground state of 147Er is estimated to be 3.2±1.2 s.
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| Keywords:
21.10.Tg
23.20.Lv
23.40.-s
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Received: 24 March 2010
Published: 25 May 2010
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| PACS: |
21.10.Tg
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(Lifetimes, widths)
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23.20.Lv
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(γ-transitions and level energies)
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23.40.-s
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(β-decay;double β-decay; electron and muon capture)
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