Year: 2026
Type: article
Abstract: 20Na is a well-known β-delayed α emitter, owing to the large decay energy of 20Na above the α + 16O threshold in the A=5α daughter nucleus 20Ne. In this work, the decay property of 20Na is investigated in detail via the β-γ β-α and β-γ-α coincidence spectroscopy. As the day-one experiment of the Beijing Rare Isotope Facility (BRIF), the intense 20Na beam was produced using the Isotope Separator On Line (ISOL) technique through the 100 MeV proton bombarding a stack of MgO as a thick target. Specific interest was focused on the exotic decay mode of 20Na; the previously reported low-energy α lines at 713 and 846 keV were confirmed, and several weak β-γ-α decay sequences were clearly identified for the first time, thanks to the strong resolving power of α-γ coincidence spectroscopy. The decay properties of 20Na are compared to the shell model calculation, which agree reasonably well with the allowed β transition strengths and subsequent electro-magnetic transitions with the use of the sd shell-model space with the USDB interaction.
Source: Particles
Authors: Qiang Wang, You-Bao Wang, Jun Su, Zhi-Yu Han, B. Alex Brown, Li-Hua Chen, Zi-Qiang Chen, Bao-Qun Cui, Bo Dai, Tao Ge, Xin-Yue Li, Yun-Ju Li, Zhi-Hong Li, Gang Lian, Yin-Long Lyu, Rui-Gang Ma, Tian-Li Ma, Xie Ma, Ying-Jun Ma, Yi Su, Bing Tang, Chun-Guang Wang, Hong-Yi Wu, Fu-Rong Xu, Sheng-Quan Yan, Sheng Zeng, Hao Zhang, Yun Zheng, Chao Zhou, Yang-Ping Shen, Bing Guo, Tian-Jue Zhang, Wei-Ping Liu
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,930
OpenAlex ID: W7154707207