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Evidence for an Isomeric 3/2- State in 53Co

Rudolph, Dirk LU ; Hoischen, Robert LU ; Hellström, Margareta LU ; Pietri, S; Podolyak, Zs; Regan, P H; Garnsworthy, A B; Steer, S J; Becker, F and Bednarczyk, P, et al. (2008) In European Physical Journal A. Hadrons and Nuclei 36(2). p.131-138
Abstract
The fragmentation of a 550MeV/u primary beam of Ni-58 on a Be-9 target has been used to measure time-and energy-correlated gamma decays following the implantation of event-by-event discriminated secondary fragments into a Be-9 stopper plate. A new isomeric gamma decay with T-1/2 = 14(6 4) ns and E-gamma = 646.2(2) keV is observed and attributed to the decay of the yrast 3/2-state in Co-53(27)26. This short-lived isomeric state has been populated by means of nuclear reactions during the stopping process of the secondary fragments. The experimental findings are discussed in the framework of large-scale spherical shell model calculations in conjunction with isospin symmetry-breaking residual interactions for the A = 53, Tz = +/- 1/2 mirror... (More)
The fragmentation of a 550MeV/u primary beam of Ni-58 on a Be-9 target has been used to measure time-and energy-correlated gamma decays following the implantation of event-by-event discriminated secondary fragments into a Be-9 stopper plate. A new isomeric gamma decay with T-1/2 = 14(6 4) ns and E-gamma = 646.2(2) keV is observed and attributed to the decay of the yrast 3/2-state in Co-53(27)26. This short-lived isomeric state has been populated by means of nuclear reactions during the stopping process of the secondary fragments. The experimental findings are discussed in the framework of large-scale spherical shell model calculations in conjunction with isospin symmetry-breaking residual interactions for the A = 53, Tz = +/- 1/2 mirror nuclei Co-53 and Fe-53. (Less)
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European Physical Journal A. Hadrons and Nuclei
volume
36
issue
2
pages
131 - 138
publisher
Springer
external identifiers
  • wos:000256177100003
  • scopus:44649100145
ISSN
1434-6001
DOI
10.1140/epja/i2008-10587-4
language
English
LU publication?
yes
id
bf056bfe-a4e1-4dcf-98e8-0d750511d5b2 (old id 1202099)
date added to LUP
2008-09-15 14:30:51
date last changed
2017-06-18 04:20:05
@article{bf056bfe-a4e1-4dcf-98e8-0d750511d5b2,
  abstract     = {The fragmentation of a 550MeV/u primary beam of Ni-58 on a Be-9 target has been used to measure time-and energy-correlated gamma decays following the implantation of event-by-event discriminated secondary fragments into a Be-9 stopper plate. A new isomeric gamma decay with T-1/2 = 14(6 4) ns and E-gamma = 646.2(2) keV is observed and attributed to the decay of the yrast 3/2-state in Co-53(27)26. This short-lived isomeric state has been populated by means of nuclear reactions during the stopping process of the secondary fragments. The experimental findings are discussed in the framework of large-scale spherical shell model calculations in conjunction with isospin symmetry-breaking residual interactions for the A = 53, Tz = +/- 1/2 mirror nuclei Co-53 and Fe-53.},
  author       = {Rudolph, Dirk and Hoischen, Robert and Hellström, Margareta and Pietri, S and Podolyak, Zs and Regan, P H and Garnsworthy, A B and Steer, S J and Becker, F and Bednarczyk, P and Caceres, L and Doornenbal, P and Gerl, J and Gorska, M and Grebosz, J and Kojouharov, I and Kurz, N and Prokopowicz, W and Schaffner, H and Wollersheim, H J and Andersson, Lise-Lotte and Atanasova, L and Balabanski, D L and Bentley, M A and Blazhev, A and Brandau, C and Brown, J R and Fahlander, Claes and Johansson, Emma and Jungclaus, A},
  issn         = {1434-6001},
  language     = {eng},
  number       = {2},
  pages        = {131--138},
  publisher    = {Springer},
  series       = {European Physical Journal A. Hadrons and Nuclei},
  title        = {Evidence for an Isomeric 3/2- State in 53Co},
  url          = {http://dx.doi.org/10.1140/epja/i2008-10587-4},
  volume       = {36},
  year         = {2008},
}