Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Search for Weak Side Branches in the Electromagnetic Decay Paths of the 6526-keV 10+ Isomer in 54Fe

Böhm, Paul ; Hrabar, Yuliia LU orcid ; Rudolph, Dirk LU orcid ; Golubev, Pavel LU ; Sarmiento Pico, Luis LU ; Albers, Helena M. ; Anderson, John T. ; Bentley, Michael A. ; Carpenter, M. P. and Chiara, Christpher J. , et al. (2023) In Atoms 11(9).
Abstract
High-spin nuclear isomers in N≈Z nuclei between doubly magic 40Ca and 56Ni 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 54Fe. The isomer was strongly populated by means of the fusion-evaporation reaction 24Mg(36Ar,α2p)54𝑚Fe. The Gammasphere array was used to detect γ-ray cascades emitted from the isomeric state. By means of γγγ coincidences, weak non-yrast decay branches... (More)
High-spin nuclear isomers in N≈Z nuclei between doubly magic 40Ca and 56Ni 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 54Fe. The isomer was strongly populated by means of the fusion-evaporation reaction 24Mg(36Ar,α2p)54𝑚Fe. The Gammasphere array was used to detect γ-ray cascades emitted from the isomeric state. By means of γγγ coincidences, weak non-yrast decay branches can be discriminated, with the isomer’s half-life confirmed at T1/2 =363(4) ns. The yrast 6+1→2+1 E4 cross-over transition was interrogated. The observations are compared with shell-model calculations. (Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; ; ; and , et al. (More)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; and (Less)
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
nuclear isomerism, electromagnetic transitions, nuclear shell model
in
Atoms
volume
11
issue
9
article number
116
pages
7 pages
publisher
MDPI AG
external identifiers
  • scopus:85174694330
ISSN
2218-2004
DOI
10.3390/atoms11090116
project
Nuclear Structure at the Limits: Isotope-selective Spectroscopy
Characterization of the Anti-Compton Shield for COMPEX Germanium Detectors and Proton-gamma Spectroscopy in the Upper fp Shell
language
English
LU publication?
yes
id
55f807e5-81cd-439c-ada7-36c55e18f0fc
date added to LUP
2023-08-25 08:57:55
date last changed
2024-03-03 07:27:10
@article{55f807e5-81cd-439c-ada7-36c55e18f0fc,
  abstract     = {{High-spin nuclear isomers in <i>N</i>≈<i>Z</i> nuclei between doubly magic <sup>40</sup>Ca and <sup>56</sup>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<sup>+</sup> isomer in <sup>54</sup>Fe. The isomer was strongly populated by means of the fusion-evaporation reaction <sup>24</sup>Mg(<sup>36</sup>Ar,α2<i>p</i>)<sup>54&#x1d45a;</sup>Fe. The Gammasphere array was used to detect γ-ray cascades emitted from the isomeric state. By means of γγγ coincidences, weak non-yrast decay branches can be discriminated, with the isomer’s half-life confirmed at <i>T</i><sub>1/2</sub> =363(4) ns. The yrast 6<sup>+</sup><sub>1</sub>→2<sup>+</sup><sub>1</sub> <i>E</i>4 cross-over transition was interrogated. The observations are compared with shell-model calculations.}},
  author       = {{Böhm, Paul and Hrabar, Yuliia and Rudolph, Dirk and Golubev, Pavel and Sarmiento Pico, Luis and Albers, Helena M. and Anderson, John T. and Bentley, Michael A. and Carpenter, M. P. and Chiara, Christpher J. and Copp, Patrick A. and Forsberg, Ulrika and Huang, Tianheng and Jayatissa, H. and Lauritsen, T and Müller-Gatermann, C. and Pereira-Lopez, X. and Reviol, Walter and Seweryniak, Darek and Stolze, Sanna and Uthayakumaar, Sivahami and Wilson, Gemma L. and Wu, Jin}},
  issn         = {{2218-2004}},
  keywords     = {{nuclear isomerism; electromagnetic transitions; nuclear shell model}},
  language     = {{eng}},
  month        = {{08}},
  number       = {{9}},
  publisher    = {{MDPI AG}},
  series       = {{Atoms}},
  title        = {{Search for Weak Side Branches in the Electromagnetic Decay Paths of the 6526-keV 10<sup>+</sup> Isomer in <sup>54</sup>Fe}},
  url          = {{http://dx.doi.org/10.3390/atoms11090116}},
  doi          = {{10.3390/atoms11090116}},
  volume       = {{11}},
  year         = {{2023}},
}