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Neaw β-delayed proton precursor121Ce near the proton drip-line

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Abstract

Unknown β-delayed proton precursor121Ce was produced via the reaction of92Mo(32S, 3n), and identified by an He-jet fast tape transport system with “P-γ” coincidence measurements. The half-life of121Ce decay was determined to be (1.1 ± 0. l)s. Its energy spectrum of β-delayed protons was measured and the β-delayed proton branching ratio for121decay was roughly estimated to be ∼ 1 %. After β-delayed proton decay of the precursors119Ba,121Ba and122La, some of γ-transitions from low-lying states to the ground states in their “daughters” were observed for the first time.

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Authors and Affiliations

  1. Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, China

    Shuwei Xu, Zhankui Li, Yuanxiang Xie, Ruichang Ma, Yuanxiu Ge, Chunfang Wang, Wenxue Huang & Tianmei Zhang

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  1. Shuwei Xu
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  2. Zhankui Li
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  3. Yuanxiang Xie
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  4. Ruichang Ma
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  5. Yuanxiu Ge
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  6. Chunfang Wang
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  7. Wenxue Huang
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  8. Tianmei Zhang
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Additional information

Project supported by the National Natural Science Foundation of China (Grant No. 19475055) and the Chinese Academy of Sciences.

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Xu, S., Li, Z., Xie, Y. et al. Neaw β-delayed proton precursor121Ce near the proton drip-line. Sci. China Ser. A-Math. 41, 1223–1227 (1998). https://doi.org/10.1007/BF02871985

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  • DOI: https://doi.org/10.1007/BF02871985

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