Chin. Phys. Lett.  2010, Vol. 27 Issue (6): 062104    DOI: 10.1088/0256-307X/27/6/062104
NUCLEAR PHYSICS |
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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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.

Keywords: 21.10.Tg      23.20.Lv      23.40.-s     
Received: 24 March 2010      Published: 25 May 2010
PACS:  21.10.Tg (Lifetimes, widths)  
  23.20.Lv (γ-transitions and level energies)  
  23.40.-s (β-decay;double β-decay; electron and muon capture)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/27/6/062104       OR      https://cpl.iphy.ac.cn/Y2010/V27/I6/062104
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MA Fei
ZHOU Xiao-Hong
ZHENG Yong
XU Shu-Wei
XIE Yuan-Xiang
CHEN Liang
ZHANG Yu-Hu
LI Zhan-Kui
QIANG Yun-Hua
LEI Xiang-Guo
GUO Ying-Xiang
GUO Song
DING Bing
WANG Hai-Xia
LI Guang-Shun
ZHOU Hou-Bing
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