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arXiv · 2603.06707

Energy Levels of 20Al

K. Setoodehnia·J. H. Kelley
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Abstract

Experimental nuclear structure data are evaluated for 20Al. The 3p-unbound, previously unobserved 20Al nucleus was recently discovered by (2025Xu03) through the analysis of the (2007Mu15: 9Be(20Mg,9Mg)) data. (2025Xu03) analyzed the by-product 9Be(20Mg,20 Al) charge exchange reaction channel followed by an in-flight decay of 20Al. The ground state of 20Al decays by one-proton emission to the ground state of 19Mg , which is also particle unbound and democratically decays to 17Ne(g.s.)+2p.

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K. Setoodehnia, J. H. Kelley. 2026-03-05. Energy Levels of 20Al. https://arxiv.org/abs/2603.06707

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