New Results of β-delayed α Decay of 20Na

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Xu Xiaoji, Hu Zhiqiang, Guo Junsheng, Ma Ruichang, Liu Hongye, Luo Yixiao, Zhang Yuzhao, Guo Tianrui, Huang Wenxue and Xu Lianlian. New Results of β-delayed α Decay of 20Na[J]. Chinese Physics C, 1994, 18(8): 680-686.
Xu Xiaoji, Hu Zhiqiang, Guo Junsheng, Ma Ruichang, Liu Hongye, Luo Yixiao, Zhang Yuzhao, Guo Tianrui, Huang Wenxue and Xu Lianlian. New Results of β-delayed α Decay of 20Na[J]. Chinese Physics C, 1994, 18(8): 680-686. shu
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Received: 1900-01-01
Revised: 1900-01-01
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New Results of β-delayed α Decay of 20Na

    Corresponding author: Xu Xiaoji,
  • Institute of Modern Physics, Academia Sinica,Lanzhou 730000

Abstract: The β-delayed α decay of 20Na was restudied using neon target bombarded by 25 and 35.5 MeV protons.In this experiment a newly developed particle-telescope system including a gas ionization chamber as a thin ΔE detector was used. Two new peaks,one at 0.695 MeV and other at 0.907 MeV, were observed for the first time in the charged particle spectra. Based on particle identification, branching ratio and life time measurement,it is believed that these new peaks result from β-delayed low energy αdecay of 20Na.The decay scheme and the low-lying level scheme of 20Na were thus revised.Its possible astrophysical implications were discussed.

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