Energy Levels of 20Al

K. Setoodehnia; J. H. Kelley

Energy Levels of 20Al

Nuclear Experiment 2026-03-10 v1

Authors: K. Setoodehnia , J. H. Kelley

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.

Keywords

nuclear structure proton emission charge exchange reaction unbound nucleus in-flight decay

Cite

@article{arxiv.2603.06707,
  title  = {Energy Levels of 20Al},
  author = {K. Setoodehnia and J. H. Kelley},
  journal= {arXiv preprint arXiv:2603.06707},
  year   = {2026}
}

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