First Observation of <i>β</i>-delayed Proton Decay of Proton Drip Line Nuclide <sup>19</sup>Na

Xu Xiaoji; Ma Ruichang; Huang Wenxue; Hu Zhiqiang; Gu Junsheng; Guo Yingxiang; Xu Lianlian; Liu Hongye; Luo Yixiao; Wang Shuhong; Kong Dengming; Qiao Jimin

Chinese Physics C> 1995, Vol. 19> Issue(S2) : 109-114

First Observation of β-delayed Proton Decay of Proton Drip Line Nuclide ¹⁹Na

1 Institute of Modem Physics, The Chinese Academy of Sciences, Lanzhou, China;
2 Institute of High-energy Physics, The Chinese Academy of Sciences, Beijing, China

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The nuclide on proton drip line ¹⁹Na was studied through a ²⁰Ne(p,2n)¹⁹Na reaction. Its new decay mode of β-delayed proton decay was observed for the first time. The proton energy was measured to be 1.10±0.08 MeV and its half-life was determined to be 47±20 ms, which corresponds to a superallowed β transition of ^l9Na ground state to ¹⁹Ne 7.62 MeV isospin analog state with T=3/2, and subsequent proton emission to ^{an 18}F ground state.
- proton decay ,
- β-delayed decay ,
- precursor ,
- drip line nuclei

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Xu Xiaoji, Ma Ruichang, Huang Wenxue, Hu Zhiqiang, Gu Junsheng, Guo Yingxiang, Xu Lianlian, Liu Hongye, Luo Yixiao, Wang Shuhong, Kong Dengming and Qiao Jimin. First Observation of β-delayed Proton Decay of Proton Drip Line Nuclide ¹⁹Na[J]. Chinese Physics C, 1995, 19(S2): 109-114.

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Received: 1994-11-24

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Supported by the National Natural Science Foundation of China.

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

First Observation of β-delayed Proton Decay of Proton Drip Line Nuclide ¹⁹Na

1 Institute of Modem Physics, The Chinese Academy of Sciences, Lanzhou, China;
2 Institute of High-energy Physics, The Chinese Academy of Sciences, Beijing, China

Received Date: 1994-11-24

Fund Project: Supported by the National Natural Science Foundation of China.

Abstract: The nuclide on proton drip line ¹⁹Na was studied through a ²⁰Ne(p,2n)¹⁹Na reaction. Its new decay mode of β-delayed proton decay was observed for the first time. The proton energy was measured to be 1.10±0.08 MeV and its half-life was determined to be 47±20 ms, which corresponds to a superallowed β transition of ^l9Na ground state to ¹⁹Ne 7.62 MeV isospin analog state with T=3/2, and subsequent proton emission to ^{an 18}F ground state.

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First Observation of β-delayed Proton Decay of Proton Drip Line Nuclide ¹⁹Na

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First Observation of β-delayed Proton Decay of Proton Drip Line Nuclide 19Na

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First Observation of β-delayed Proton Decay of Proton Drip Line Nuclide ¹⁹Na

First Observation of β-delayed Proton Decay of Proton Drip Line Nuclide ¹⁹Na