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- Title
Detailed study of the decay of 21Mg.
- Authors
Jensen, E. A. M.; Nielsen, S. T.; Andreyev, A.; Borge, M. J. G.; Cederkäll, J.; Fraile, L. M.; Fynbo, H. O. U.; Harkness-Brennan, L. J.; Jonson, B.; Judson, D. S.; Kirsebom, O. S.; Lică, R.; Lund, M. V.; Madurga, M.; Marginean, N.; Mihai, C.; Page, R. D.; Perea, A.; Riisager, K.; Tengblad, O.
- Abstract
Beta-delayed proton and gamma emission in the decay of 21 Mg has been measured at ISOLDE, CERN with the ISOLDE Decay Station (IDS) set-up. The existing decay scheme is updated, in particular what concerns proton transitions to excited states in 20 Ne. Signatures of interference in several parts of the spectrum are used to settle spin and parity assignments to highly excited states in 21 Na. The previously reported β p α branch is confirmed. A half-life of 120.5(4) ms is extracted for 21 Mg. The revised decay scheme is employed to test mirror symmetry in the decay and to extract the beta strength distribution of 21 Mg that is compared with theory.
- Subjects
EXCITED states; BETA distribution; MIRROR symmetry; PROTONS
- Publication
European Physical Journal A -- Hadrons & Nuclei, 2024, Vol 60, Issue 7, p1
- ISSN
1434-6001
- Publication type
Article
- DOI
10.1140/epja/s10050-024-01376-6