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- Title
Search for Weak Side Branches in the Electromagnetic Decay Paths of the 6526-keV 10 + Isomer in 54 Fe.
- Authors
Böhm, Paul; Hrabar, Yuliia; Rudolph, Dirk; Golubev, Pavel; Sarmiento, Luis G.; Albers, Helena M.; Anderson, John T.; Bentley, Michael A.; Carpenter, Michael P.; Chiara, Christopher J.; Copp, Patrick A.; Forsberg, Ulrika; Huang, Tianheng; Jayatissa, Heshani; Lauritsen, Torben; Müller-Gatermann, Claus; Pereira-Lopez, Xesus; Reviol, Walter; Seweryniak, Darek; Stolze, Sanna
- Abstract
High-spin nuclear isomers in N ≈ Z nuclei between doubly magic 40 Ca and 56 Ni provide an excellent testing ground for the nuclear shell model and questions related to isospin symmetry breaking in the vicinity of the proton drip line. The purpose of the present study is to investigate the possibility of weak electromagnetic decay branches along the decay paths of the 6526-keV 10 + isomer in 54 Fe. The isomer was strongly populated by means of the fusion-evaporation reaction 24 Mg( 36 Ar, α 2 p ) 54 m Fe. The Gammasphere array was used to detect γ -ray cascades emitted from the isomeric state. By means of γ γ γ coincidences, weak non-yrast decay branches can be discriminated, with the isomer's half-life confirmed at T 1 / 2 = 363 (4) ns. The yrast 6 1 + → 2 1 + E 4 cross-over transition was interrogated. The observations are compared with shell-model calculations.
- Subjects
NUCLEAR shell theory; HEAVY ion fusion reactions; ISOMERS; SYMMETRY breaking; ISOBARIC spin
- Publication
Atoms (2218-2004), 2023, Vol 11, Issue 9, p116
- ISSN
2218-2004
- Publication type
Article
- DOI
10.3390/atoms11090116