Synthesis and Gamma Decay of New Heavy Neutron-Rich Isotope 175Er

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Yang Weifan, Yuan Shuanggui, Zhang Xueqian, Yu Xian, Mou Wantong, Li Zhongwei, Gan Zaiguo, Liu Hongye, Guo Junsheng, Zhong Jiquan and Sun Xiangfu. Synthesis and Gamma Decay of New Heavy Neutron-Rich Isotope 175Er[J]. Chinese Physics C, 1996, 20(S1): 1-2.
Yang Weifan, Yuan Shuanggui, Zhang Xueqian, Yu Xian, Mou Wantong, Li Zhongwei, Gan Zaiguo, Liu Hongye, Guo Junsheng, Zhong Jiquan and Sun Xiangfu. Synthesis and Gamma Decay of New Heavy Neutron-Rich Isotope 175Er[J]. Chinese Physics C, 1996, 20(S1): 1-2. shu
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Received: 1995-08-10
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    Supported by the National Natural Science Foundation of China and the Science Foundation of the Chinese Academy of Sciences.

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Synthesis and Gamma Decay of New Heavy Neutron-Rich Isotope 175Er

  • Institute of Modem Physics, The Chinese Academy of Sciences, Lanzhou, China
Fund Project:  Supported by the National Natural Science Foundation of China and the Science Foundation of the Chinese Academy of Sciences.

Abstract: A new isotope 175Er was synthesized for the first time by the 176Yb(n,2p)175Er reaction in irradiation of natural metal ytterbium targets with 14 MeV neutrons. The activities of 175Er were observed by γ(X) ray spectroscopy. Eight new γ rays of 76.5, 120.9, 123.7, 128.5,227.3,234.0,281.4, and 1167.5 keV with half-life of 1.2±0.3 min were found and assigned to the β decay of 175Er. A partial decay scheme of 175Er was proposed.

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